Functions - Free Formula Sheet: bit.ly/3Ai8NZv Final Exams and Video Playlists: www.video-tutor.net/ Next Video: th-cam.com/video/OYOXMyFKotc/w-d-xo.html Functions and Graphs: th-cam.com/video/ZTEv8OnGaxo/w-d-xo.html Transformations of Functions: th-cam.com/video/tyQLp6x-GoU/w-d-xo.html Graphing Polynomial Functions: th-cam.com/video/rOOefdqMvtA/w-d-xo.html
Right. I didnt really understand when it was said that they " factored the trinunerial of the quadratic formula" 3:52 I dont understand how x= 2 the checking yes but how is it equivalent like how is the 4 = -4x but
hello teacher , in exercise n 4 i tried to solve it using the formula ( -b +/- root of b^2 - 4ac ) / 2a but i my soluition was different ? is there a mistake in using this formula in this example?
I’ve noticed something when solving a Quadratic Formula by factorisation question. If the co-efficient of A is 1, then the two numbers multiplied to make the product will have to change into its inverse Example x^2 - 4x + 4 Because the co-efficient is one, I could find the product of 4 but it needs to total to -4. This will be -2 and -2 All I have to do is the inverse of -2 which would be 2. The answer is x = 2 Does this apply for every quadratic formula problem with the co-efficient of A being 1??
nope, you can test the function by replacing X with 4 and Y with the result, and if you set Y= -2 the function will turn out = 48 + 32 +20 which is 100, and the problem confirms that f(x, y) is equal to 100.
How can you subtract a 100 from a value that unknown... Y is not known and you cant subtract 5 to a hundred either since its being multipled to the unknown value y
The "26 - 10" is just an option but the answer is "(-26) 10" if you multiply those two you will get 260 and for (-26) 10 if you add them up you'll have the sum ( -16y)
![[Tagalog] Domain and range of a linear function #domain #range #math8 #linearfunction](http://i.ytimg.com/vi/dx2s-HqJLsg/mqdefault.jpg)
Functions - Free Formula Sheet: bit.ly/3Ai8NZv
Final Exams and Video Playlists: www.video-tutor.net/
Next Video: th-cam.com/video/OYOXMyFKotc/w-d-xo.html
Functions and Graphs: th-cam.com/video/ZTEv8OnGaxo/w-d-xo.html
Transformations of Functions: th-cam.com/video/tyQLp6x-GoU/w-d-xo.html
Graphing Polynomial Functions: th-cam.com/video/rOOefdqMvtA/w-d-xo.html
The braincells that I lost in 9th grade Algebra are being regained. Thanks a lot.
the brain cells i lost are still lost and this video made it a whole lot more worse
@@diamondrichards9270 but it's really simple even a 5th grade person would understand.
@@Damightyfire i used to love these type of math problem when i was 7 years old
@@sanopann1896 same
@@Damightyfire Then i wonder what brings you here now?
i tried learning pre-cal in advance so that I wouldn’t suck in class but i never really got anything right and watching ur video helped a lot 🙏🏻
never understood math within 1 minute and 4 seconds that was so easy to understand THANK YOU.
Not all superheroes wear capes
Terry van scorpio ✅✔
Never would have guessed that it really is this simple.
@iamafraidofwomenI think he's good
Fr
This man is out here saving lives , and he thought we wouldn't notice
This guy is a child of god, who needs math teachers if this guy makes it understandable in two seconds.
Thank you so much for these! I’m self teaching myself honors pre calculus this year and you’re making it a lot easier!!
this guy cover everything in the world. I love u man
MR. Organic Chemistry Tutor, thank you for a Basic Introduction of Evaluating Functions using real numbers.
the first two was easy😭😭😭 im really confused at the 3rd and 4th one
This man is an absolute legend.
DUDE, YOUR A LIFE SAVER 🙏
@iamafraidofwomenoh definitely 😂
It would be fun if online teachers teaches this way
Your a lifesaver for all college student,hope we see your face soon
Ur doing this in college? My child is doing this in 7th grade!!
@@anabelaram4355lmao 7th grade is so late
You explanation makes the whole subject way more easier! Thank you so much🙏
9:42 quadratic formula for finding y
Greatvideos dude. Thanks.
This one.is a lil too advanced for.me.at the moment. Will be back to this one.soon.
in which standard/rank/class are u in lil bro??
the only way to help this guy back is to watch the ads that popping out on his video
Great explanatory video. Thank you.
what is the purpose of subtracting 5 to x^2 - 4 +9 and how did that happen? it is in 3:53 minutes of the video. Thanks
Right. I didnt really understand when it was said that they " factored the trinunerial of the quadratic formula" 3:52 I dont understand how x= 2 the checking yes but how is it equivalent like how is the 4 = -4x but
hello teacher , in exercise n 4 i tried to solve it using the formula ( -b +/- root of b^2 - 4ac ) / 2a but i my soluition was different ? is there a mistake in using this formula in this example?
I’ve noticed something when solving a Quadratic Formula by factorisation question.
If the co-efficient of A is 1, then the two numbers multiplied to make the product will have to change into its inverse
Example
x^2 - 4x + 4
Because the co-efficient is one, I could find the product of 4 but it needs to total to -4. This will be -2 and -2
All I have to do is the inverse of -2 which would be 2. The answer is x = 2
Does this apply for every quadratic formula problem with the co-efficient of A being 1??
So you were saying that X always equals the inverse of the two middle terms
This channel made me understand the lesson than my math teacher.
He talk and move too fast that I can't follow.
why do i get goosebumps when i hear your voice
Here i am studying because tommorow will have a test
Wish me luck!! 🙏🙏
Note to self: x represents the x on the other side of the equation, and f represents everything else. Makes a lot more sense.
Best tutor ever
You didn't use MDAS rule? Because you said in problem "9+15-7" is 15-7 first?
you get the same answer either way lol
for problem at 10:00 the answer shouldnt it be 5.2
nope, you can test the function by replacing X with 4 and Y with the result, and if you set Y= -2 the function will turn out = 48 + 32 +20 which is 100, and the problem confirms that f(x, y) is equal to 100.
my midterms are in 8 hours from now, thanks.
teachers usually teach you questions 1-3 and then give you exams like question 4
Great video! You sound like Mark Wahlberg btw!!
I did not understand what was happening in problem number four at all😅😅😅
i didnt either at first, but after watching his vid on polynomials it make a little more sense
Why did we subtract -100 from 48 and not the 5y^2
How can you subtract a 100 from a value that unknown... Y is not known and you cant subtract 5 to a hundred either since its being multipled to the unknown value y
Thanks again dude
How did you get 5x50 and 5x2 in 6:44
Bro your voice is so pretty!!!
can someone explain huhu, how it -260 become -26 and 10 and 26 -10 huhu ? 7:10
The "26 - 10" is just an option but the answer is "(-26) 10" if you multiply those two you will get 260 and for (-26) 10 if you add them up you'll have the sum ( -16y)
Is this a real person ? Doing all the videos thumps up greetings from Egypt
Thanks you alot bro really appreciate it bro
Not all superheroes wear capes
Sometimes they were glasses
And a weapon we called pen
I forgot all math, I don't understand questions 3 and 4 😅😭
woah! 999 likes. If you're seeing my comment and watching this vid, you're a legend.
Do you need to apply GEMDAS?
#4 needs serious attention 😂
I am lost in question 4
Same
this is so confusing how am i supposed to do physics and chem if i cant get the basic math. im dying and literally crying here..... UGHHHHHHHHH
it wont click for the first time
just keep trying
@@marouans7755 I had this lesson for 5 years and still wont click >
What about BODMAS rule?
1:09
8:00
Interestinggg
How am I as a 6th grader doing this in my head alone
I don't think it's proper to call f(x) as f.
thankyou!
completely lost me on question 3. tf is going on 💀
i watched some videos on polynomials and now im a little bit less lost :-)
=9+15-7
=24-7
=17
🔥🔥🔥🔥💯💫
Am lost at ques 3
You have to learn Quadratic Equations first
thank u, teacher. u just save my ass :)
thank u but please speak louder i cannot focus 😭
Sorry I'm bobo talaga sa math
sameee, lalo na sa question 4 omg
@@gyannizell4597 wag mawalan ng pag asa mga tol.
nga pala anung year bato pinag aaralan
How can a valid second degree trinomial function have no real solution? the discriminate is -5
2:34