Draw Cubic Graph Grade 12

[@kevinmathscience]

Small mistake at 4:50 but luckily it does not effect the final answer.
I said +B instead of -B. But B will still end up as 0.

[@t.bo.a7061]

2 is also a factor

[@jemimahmuronda3060]

Thank you so much I was about to ask you about it 4:50

[@BonoCherish]

Okay. ❤I didn't see this sooner, let me delete my comment.

[@refilwemashego9779]

Your lessons are so good I am so enjoying them I feel like I can ace all my exams

[@kevinmathscience]

Great Refilwe! Keep working hard and giving it your best :)

[@rusty_sniper4992]

I write math tomorrow, you’re gonna carry me through it 😭

[@Gorlockthedestroyer2.0]

To make your lives a bit easier, just use Mode-5-4 to get the x-intercepts

[@abigailfukweni7363]

You are simply the best Mr Kevin👌❤

[@kevinmathscience]

Thank you Abigail! Keep working hard :)

[@letlhogonolomolefe6388]

Your the best Kelvin
You made me upgrade my matric at age of 31 am writing my exam Paper 1 on Friday 13 may 2022

[@siyamthandangoma5645]

Can you just use synthetic division to find the intercepts?

[@5e4_00]

Thank you my friend really helped me a lot to understanding cubic polynomial

[@amycarr6479]

kevin -2 also gives you zero...would it be wrong to use -2?

[@reece_papiah7164]

U helped me so much thank u Kevin

[@AD-hr4xf]

when guessing for the 1st x-int, cant we use the factors on the last number ? great lesson btw i got exactly what i needed!!!

[@kevinmathscience]

Yes that is a nice technique that I have now started doing as well :) Saves time!

[@avayang6172]

Thank you . That’s really helpful

[@Elunico989]

Hey Kevin i did grouping for the x-intercepts a it worked,does it work every time or should i follow your technique

[@teepee-]

Kevin why don't we use synthetic division

[@_Nkokheli-Duma9]

Sir, would it be necessary to calculate and include Point of inflaction when sketching your graph?

[@rifumowillkhoza]

Why do we use quadratic formula to find the turning point and not the regular formula for a tp

[@danxgaming8709]

Helo uncle Kev, for this question I made f(x)=0 and didn’t sub in the X values.So
0=(x+3)(x-1)(x-1) and then simplified into the actual formula, is that alright or do I have to use your way with the a and triple brackets? When they give x intercepts I mean-I’ll have to use your way if they don’t

[@LeratoMakgoga-s3r]

i dont understand how you got the value of B

[@pjxihlukemkhombo2727]

Same

[@leeroy14r60]

Oh hell no, ain't gonna let this one slide. Where's my mom's credit card..

[@thandosibanda6592]

Hi! Your video was insanely helpful thank you so much! Although my question is where do we get the quad equation 3x^2 - 2x -4 from?

[@kevinmathscience]

Hello :) That is after I took the first derivative of the original function :)

[@slayeverydayy]

differentiate

[@notjason1553]

In a previous videos you solved for POI ( stationary points) why didn't you in this one please?

[@SisMbuyisa]

after getting the (x-1) can I factorize the other bracket instead of using the formula?

[@kevinmathscience]

Sometimes :) Other times it wont work out as the answers will be decimals etc...

[@MbaliTafu]

Good sir
I just wanna ask for f(x)=x^3-x^2-4x+4 instead of this method; 0=(x-1)(AX^2+BX^2+C), why can't you use grouping to factories f(x)

[@phumzilemoonmabena5840]

I'm so lost😢

[@SiphiweChristopher]

Writing tomorrow 😭

[@okhanyilekhanyi1029]

You thee best❤️

[@enetomasingi]

Hey Kevin,thanks for the amazing lesson I understood everything,but the part I don't get is why you didn't calculate the inflection point?

[@Sean-t5j]

The inflection point is the middle x-intercept

[@becomingmissmandehwe]

I think made a mistake, theres no point of inflection

[@pareetienitti7715]

If you multiply - 1 by by b won't it give you - b? This is confusing please give me clarity on that.

[@kannedeen]

It's a mistake but doesn't affect the final answer
B still ends up as 0

[@khanyisilerejoice691]

Thanks sir

[@obodaitorgbor8704]

please if you multiply -1 by b wan't it give you -b

[@tshegofatsofortunate4118]

I'm struggling to acess the 7 days trail for R79

[@kevinmathscience]

Hello Tshegofatso,
Please give me your email?

[@shameelnkosi]

i found a simpler way to factorise by using a calculator

[@ntwananorikhotso9459]

How?

[@noluthadoshabangu2037]

​​@@ntwananorikhotso9459 Mode; 3:Table then input ur function like normal u will get the x interceps

[@eliyamusombwa6050]

Mode 5 > 4
Plug in ur details and you'll get the x values

[@jjennifer_luv1353]

❤

[@obodaitorgbor8704]

ok

[@Blessing_forex_trading]

I'm writing in 2 hours 😭