icse |class-9 |mathematics |ch-4 |Expansions |Ex-4(a) |Introduction

This video is based on ICSE Class-9th ch-4 Expansions
There is minor mistake in Q.no:-1 part(ii).
We used 3ab in place of 2ab.
correct answer will be
(3a+7b)²=(3a)²+(7b)²+2(3a)(7b)
=9a² + 49b²+ 42ab
Ex-4a link:- • icse |class-9 |mathema...
Ex-4b link:- • icse |class-9 |mathema...
Ex-4c link:- • icse |class-9 |mathema...
Ex-4d link:- • icse |class-9 |mathema...
Ex-4e link:- • icse |class-9 |mathema...
(All Chapters--Playlist)
Ch-1(RATIONAL AND IRRATIONAL NUMBERS)
• RATIONAL AND IRRATIONA...
Chapter-2(Compound interest- without using formula)
• COMPOUND INTEREST WITH...
Chapter-3(Compound interest- using formula)
• COMPOUND INTEREST USIN...
Ch-4(Expansions)
• EXPANSION CLASS-9TH ICSE
Ch-5(Factorisation)
• FACTORIASATION CLASS 9...
Ch-6(Simultaneous Equations)
• SIMULTANEOUS LINEAR EQ...
Ch-7(Indices)
• INDICES (CLASS-9TH ICSE)
Ch-8(Logarithms)
• LOGARITHMS (CLASS-9TH ...
Ch-9(Congruency in Triangles)
• TRIANGLES(CONGRUENCY I...
Ch-10(Isosceles Triangles)
• CL-9th CH-10 ISOSCELES...
Ch-11(Inequalities)
• Cl-9th Ch-11(Inequalit...
Ch-12(Mid-point Theorem and its converse)
• CL-9 CH-12(MID-POINT A...
Ch-13(Pythagoras Theorem)
• CL-9 CH-13(PYTHAGORAS ...
Ch-14(Rectilinear Figures)
• CL-9 CH-14(RECTILINEAR...
Ch-15(Construction of Polygons)
• Cl-9th Ch-15(Construct...
Ch-16(Area Theorems)
• Cl-9th Ch-16(Area Theo...
Ch-17(Circle)
• Cl-9th Ch-17(Circle)
Ch-18(Statistics)
• CL-9 CH-18(STATISTICS)
Ch-19(Mean and Median)
• CL-9 CH-19(MEAN AND ME...
Ch-20(Area and perimeter of plane Figures)
• CL-9 CH-20(AREA AND PE...
Ch-21(Solids-surface area and volume of 3-D solids)
• Cl-9th Ch-21(Solids-Su...
Ch-22(Trigonometrical Ratios)
• Cl-9th Ch-22(TRIGONOME...
Ch-23(Trigonometrical ratios of standard angles)
• Cl-9th Ch-23(TRIGONOME...
Ch-24(Solution of Right Triangles)
• CL-9 Ch-24(SOLUTION OF...
Ch-25(Complementary Angles)
• CL-9 CH-25(COMPLEMENTA...
Ch-26(Co-ordinate Geometry)
• icse class-9 selina ...
Cl-9th Ch-27(Graphical Solution):
• Cl-9th Ch-27(Graphical...
Ch-28(Distance formula )
• Cl-9th Ch-27(Graphical...
*******************For Class-10th********************
Ch-1(GST)--Playlist
• GST (Class-10th ICSE) ...
Ch-2(Banking) New lecture-playlist
• BANKING(CLASS-10TH ICSE)
Ch-3(Shares and Dividends)
• SHARES AND DIVIDENDS(C...
Ch-4(linear inequations)
• LINEAR INEQUATIONS(CLA...
Ch-5(Quadratic Equation)
• Quadratic Equations(Cl...
Ch-6(Solving Problems)
• Solving Problems(based...
Ch-7(Ratio and Proportion)
• RATIO AND PROPORTION (...
Ch-8(Remainder and Factor Theorems)
• REMAINDER AND FACTOR T...
Ch-9(Matrices)
• MATRICES(CLASS-10TH ICSE)
Ch-10(A.P)
• ARITHMETIC PROGRESSION...
Ch-11(G.P)
• G.P(geometrical progre...
Ch-12(Reflection)
• Reflection(Class-10th ...
#PROBLEMS_BEATER#ICSE#CH-4#Expansion#cl-9th

[@tanishk6576]

Legends are 1 day before exams/test 👽

[@mahien2302]

What about at 12:00 am 😙. Just 6hours before 😂

[@AmanKumar-ek7vg]

Sir question 1 sub part (ii)is wrong. There would be 2×3a×7b but you have wrote 3×3a×7b

[@vishalagarwal5879]

Yes

[@sakshampandey5921]

Yes

[@madaraxpeace2701]

Yes

[@Savitri_chhetri8399]

Yaaa i was about to type😅

[@Subsribeeeeeb]

Same with subpart iv

[@nasreenansari2633]

I was shocked when I saw likes in this video only about 425 like are there ,but beside I was thankful to you to help 👍 keep doing like that ,I don't know how I thanks to you thankyou v.v.very much

[@lakhisingh7908]

Appreciatable work ❤️

[@piyushasamji2473]

Best math teacher I’ve ever seen🥰👌🏻

[@anshikaa2414]

I started watching this at 11:15 pm and now it is 1:44 am. It literally took me almost 3 hours for one exercise. Day after tomorrow is my exam and I have 15 chapters to complete. 😢

[@painxmachine]

What Happened Bro? Now

[@VeNoM_416]

Yeah Totally relatable 😶

[@priyankaupadhyay8565]

And still you are wasting time writing this comment

[@jasspreet2510]

Bhai tere batte sun kr mujhe abb confidence hii nhi aa rha syllabus complete krne ka BTW 🤞

[@user-gr2tu1nq4u]

Same here brooo i got 14 more chapters tmr is my exam

[@Ffgamer-bo2uv]

Tomorrow is a test in my school of this chapter and ur video helped me for revision 😃

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Test?? Broooo offline exaams😭

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No sister

[@Nanshi158]

Sir so much noise

[@ishitashingadiya6945]

Yes sir in question 1 sub part 2 whay have to done 3ab instead or 2ab?

[@StudyWithRwa800]

Bhai aapne video banane के लिए mic kon sa use kiya h batana hme bhi

[@videocreation7409]

Thank you alot sir
Only because of you my marks in term 1 has been increased.

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BRO U EXPLAINED THIS BETTER THAN MY TEACHER, THANK Q A ALOT BRO

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U r great

[@prabhsingh4874]

Nice line

[@PB08_VALE]

13 ok ji

[@PB08_VALE]

13 ok ji 🖕

[@ashu6060]

Thank you sir for helping
Tomorrow is my maths exam
And after seeing this all my doubts are clear 🙌

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[@indianartist8887]

Sir thankyou so much for explaining it so clearly and for doing each question....Now I can easily understand it.👍😊

[@gamingchannel2895]

Are Bhai 😂😂

[@surjeetkaur216]

Thank you very much sir.. this video helped me alot

[@ffamangaming3794]

Thanks sir for your help 👍

[@SangeetaSrivastavamaths]

बहुत अच्छा पढ़ाया आपने। #class8mathsmatics

[@chanchalmahapatra5551]

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Sach me bro khuch bhi samajh nahi aya school se par bahi tum ne honsla bda diya sum samjha ke bro God bless you

[@itunes3878]

Sir only 9b² square numbers will cancel ?

[@ankithaa09]

Best sir!
Thank youu❤🎉

[@navyachegiri6826]

34:32 , sir why do we have to use that expansion? Please explain in detail sir

[@priyanshushandilya4980]

Are u francerian ?

[@vardanrathore7152]

sir pls make a video on the area and perimeter chapter 20 of Selina class 9 mathematics.

[@kingfishertiwarijiii..3442]

Yes sir

[@whiteanglegamer7864]

👌💰

[@justedit510]

Sir in Q1 i) you have written formula a square + b square +3 ab , so it should be 2ab.

[@justedit510]

In many Q same mistake you have done.

[@cartnwrld2818]

Thanku sir for explanation

[@goluyadav-cl4jz]

It is very helpful to complete syllabus, thank yoi sir🙏

[@arenteomkarpatil3505]

It's wrongneversise 4 a 1 ii wrong haa

[@adajcoding4792]

sir this is a very really good explanation

[@aditiriyal4267]

Tommorow is my exam 😂😂I'm watching before 2 hours

[@dark_ff_609]

Ha ha mia toh exam hall me dekh raha hu exam paper milne se pehele😂

[@studydragons]

Sir q no 9(ii)ab find karne mein (a+b)square se karenge toh Chalega?

[@ProblemsBeater]

yes you can find the value of ab with help of (a+b)²

[@ritachatterjee]

Question no.1 subpart(ii) the formula and answer is wrong. It will be:
3a+7b
=(3a+ 7b)²
=(3a)² +(7b)²+2×3a×7b
=9a²+49b²+42ab {ANSWER}
Thank you sir

[@aedangaming626]

💖💖

[@kshetreyapadekar9113]

43:24

[@gangeshwarkumar9356]

Sir please tell me which session you have book

[@urpgamingv4899]

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[@gajendrasingh-bi9dy]

Thankyou so much sir

[@Devil_Mind40]

19:19 You are the bestttttttttttttt sir
I have ever seen
I am doing revision from this video
For my exam
Thank you so much sir

[@future__999]

Which school

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[@balwinderkaur4527]

Mera paper bohut badia ho gya thank u sir maine first 4 ch ki sare videos dekhi thi bohut badia hua paper 😊😊😊

[@ProblemsBeater]

my pleasure

[@anshk2407]

🙏🙏

[@fuzial4659]

Thanks brother this helps alot

[@busyarmygaming7634]

Sir second question is wrong you have to multiply 3 by 2 not by 3.

[@CRADY-X]

Yes right

[@Shaurya_CR7_]

Yes right

[@omanshagarwal]

And 1 ka fourth part bhi wrong hai

[@busyarmygaming7634]

Yes

[@shritysweksh8298]

Nice explanation 👍

[@sohitkumar6431]

Thankyou so much sir 🙏

[@MyWay_MyJourney]

Thank you so much sir ❤❤

[@reubenpeter7229]

holy square very nice lol , good teaching thou

[@nightbot3851]

Sir in question no.1 part 2 the answer is written wrong in book

[@setmax2112]

Sir aap ne ex 4 a ke first question Ka answer me 4 ab ko b2 se pehle Likha hai aise likh sakte hai🤔

[@cricketFirstneuz]

Nxt level explain

[@shanmuganandav1152]

THANK U SO MUCH SIR I CAN UNDERSTAND YOUR TEACHING SIR THANKS U SO MUCH
❤❤❤❤❤❤❤❤❤❤❤
YOUR NEW SUBSCRIBER

[@Poonamrana13]

Tomorrow is my viva and I am study now... Thank you.... u help me mossttt....

[@nandiniandnavishow3632]

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[@khalidnadeem3611]

Very much helpful..😁

[@premchandragupta7392]

272³ - 122³/136²+136×61+61²
👆
Answer using identify?????

[@hemanthraj.b.v7340]

I think you have asked question without knowing answer

[@Reshmakhatoon264]

Thank you so much♥️

[@navdeepgairola461]

Bhaiya thank you apka

[@tushtiagarwal9111]

Thank you so muchhh sirr this is like a boon to us

[@mohdafzal3996]

You are from which school?

[@tarunytggaming]

Thanku sir❤❤

[@STUDYWITHME-ob5vq]

# sir why you do not solve underoot at 49:00

[@javaprogramming3498]

that was except able (smile)

[@HarmanSingh-yq9dh]

Thank you sir

[@youtubeuser2035]

Thank you very much sir 😊😊😊😊😊😊

[@Harsha._]

6:51 sir this one also there should be -3 instead of -2

[@ArpitaTripathi-oo8os]

Thankyou so much sir

[@yamunaprasadsingh6930]

Thanks for your hard work

[@shonkighorianda2349]

Thankyou sir ❤❤

[@tanmansaini2959]

Thanks a lot sir...huge respect for you! Keep posting vids like this :) 😀

[@ProblemsBeater]

my pleasure

[@ramirez5152]

Sir aapne bohot questions wrong kiye aapne formula wrong liya aapne a2+b2+ya-3ab use kiya par aapko udar a2+b2+ya-2ab lena chahiye tha sir textbook ke peeche correct answer hota hai maine udar se is mistake ko pata kiya.

[@manvir2657]

Sir in 4 ques 1st part why didn't you used (a+b)²-(a-b)²=4ab identity

[@SD-coaching]

May God bless you🌹

[@parastyagi815]

Thanks bhai

[@anoopmasaxena3760]

Sir thanku plz make video like this of all chapters

[@b.lkrishnappa7444]

Thank u sir because of u I scored full marks in maths

[@sanjaykumar-ui5sd]

Bro I'm tamil tommorow is my exam
But I can understand wat u teach thanks a lot bro 🙂

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😂

[@ProblemsBeater]

all the best for your exam.

[@darksidegamerzsfan9082]

Thank you sir soo much 💗😊

[@AmritpalSingh-hx7vt]

Thank you 😊

[@ganrajshekhawat3646]

Helpful in my exam

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Thank u sir 😊❤❤❤

[@abi495]

thx tomorrow is my EXAM 😅 it helps a lot

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Did you passed

[@abi495]

@@Itachi_uchiha..... yes

[@uk0152]

Some of the students says this statement in every videos 😂😂😂😂😂

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Same😂

[@harshal4317]

@@uk0152 because everyone watch like this videos before one day exam only 😅😂😂😂😂😂🤣🤣🤣🤣mand tomorrow is mine exam too

[@user-mx8ti2mk4i]

Thank you so much sir

[@sowmithmoparthi6259]

Thank u sir

[@javaprogramming3498]

Q1 part 4 -2 in place of -3

[@cgtechnogaming3308]

Very helpful sir thankyou sir

[@prohiestcontent8907]

Thank you sir
Neve forget your teaching

[@ProblemsBeater]

my pleasure

[@vp4082]

Tqsm ❤️🔥

[@swetaverma6581]

Sir thank you so much i am from other school but still prefer this video.👍

[@warriorhawk3575]

Thanks Sir this helps us a lo

[@gamingspace12]

Sir hme yeh kaise PTA lge gaa kii humko konsa formula lgana hai?? Pls reply 😊😊

[@anwitamathur6046]

Formulas yaad kroge aur practise kroge to aa jaega
When i started with expansions mujhe bhi ye hi dikat thi pr fir dhire dhire aa jaega
Just practise❤😊

[@sahilbhamare3336]

wha sir wah moj karadi hamari

[@ikopi708]

Nice

[@mrreoo7367]

Sir question 1 sub part (iv) is wrong and formula is wrong so this question is wrong

[@blackstorm4091]

4:38 there is a mistake in your formula you wrote 3ab instead of 2ab

[@kulatintyper70]

Sir in Q.no.5 We can also solve the question with:
(a-b)²=(a+b)²-4ab
This method would be musch easier 😄

[@ZTyson707]

Thx sir 🙏

[@pavithra.s904]

Hey sir 4A 1st main 2 nd question is wrong the answer is 9a2+49b2+42ab

[@harnoorkahlon9479]

Those whose paper is Tomorrow and now seeing the video so please like

[@adilrahman5895]

Q.1 ii & iv you have multiplied ×3 instead of ×2