Algebra II: Simplifying Polynomials

[lanasblue]

ughh you went too fast >: l

[KoreanPopDrama]

Just one more semester of Math and I'm done.

[Masterman5010]

It's hard 2 understand, is math that hard, 4 me it's hard 2 understand, but this is a great way how 2 simplify polynomials

[melisantika]

I am very happy to see the vidoe simplifying polynomials and algebraic expressions from you, hopefully the others also are happy for You

[Onepissite]

I am very happy to see the vidoe after you give this simplifying polynomials and algebraic expressions

[Ondelendo]

I Love The Video It Can Increase My Knowledge simplifying polynomials and algebraic expressions

[bebeheuy]

Steady I Really Like This Video simplifying polynomials and algebraic expressions

[willamricard]

Nice Video That You Share , So Very Nice Thanks You simplifying polynomials and algebraic expressions

[imegatrone]

I Really Like The Video From Your simplifying polynomials and algebraic expressions

[anakmudajaman]

after i watched this video, my insight is very open because the video is very good to give information Algebra II: Simplifying Polynomials

[hockeydemon017]

I think the consensus would be that you're too stupid; not he's too fast.

[grahamdodd123]

Love you kahn.

[SouthernBelle1807]

This helped me so much! I'm home schooled and learning Algebra II is so hard when you don't have a teacher and if you don't want your mom/dad to teach you Algebra. Although I do take Algebra II with my home school group's co-op, I sometimes get lost. Last week I missed this lesson so this helped me get caught up! Thank you so much! :D

[MsAlysson2010]

i hate math!

[Kat10652]

Is this algebra II? Because I just learned all of that last year in my 8th grade Algebra I class......

[miyan12]

way to fast. terrible teacher

[JudyDunmire]

@miyan12 Khan Academy is a well known educational resource. If he seems too fast, either go back and watch again (and again, and again, if needed), or if you are hung up on the divisibility rules you may need to watch a video on those. You may also find it helpful to watch a video on FOIL or the distributive property.

[frickinAisha]

LOSTTTTT

[philsnk]

Hello I am a Chinese American student and I would like to study Architecture in college. Could you please write me a letter to attend Architecture School?

[dumbblondee631]

i had to replay this a couple times

[JudyDunmire]

@dumbblondee631 Good for you, for being persistent! That's what separates a successful student from a non-successful student!

[alforno95]

you lost me at 2:50

[JanWey91]

@alforno95 I think you lost it, he didnt lose you.

[JanWey91]

@alforno95 I think you lost it, he didnt lose you.

PS when you try to solve X^2+3x-10=0 you simplify it to (x+5)(x-2)=0 thats all he did ;D

or you lost the part when he multiplied the first part by (x-2)/(x-2) as that is multiplying by 1 which is always allowed.

[JudyDunmire]

@alforno95 Keep trying! Watch again!

[moneysuccesslegacy]

He's going fast because he has to beat the clock

[thtechno23]

is -8 a polynumial???? please reply.

[mvaudrey]

@thtechno23 Nope. Poly means many, and -8 is just one term. Even if it were -8x, that's still a monomial (mono means one). It's a polynomial when there is a plus or minus between two terms, like -8x+14.

[JudyDunmire]

@mvaudrey Polynomials includes monomials and the sum of monomials (which of course includes subtraction when you consider adding a negative).

[MrTimmyCahill]

Nice video, cleared a few things up.

[dalis001]

wait what's do you mean by a square - B square and how do you apply it to 3(4 X square - 49) and get 3 (2X +7) (2X - 7)

[MrTimmyCahill]

@dalis001 The difference of 2 squares rule, look it up.

[muzikbrat619]

thank god for khan academy

[HaydenDPresley]

You would've done it in eighth. You cover simplifying polynomials and factoring in Algebra 1. Just like in my state quadratics aren't introduced until algebra 2.

[HaydenDPresley]

I love math, and Algebra has always been my favorite branch of math.

[EmpyreanFalling]

why is the (x-2)  with (x+3) suddely on the top of the equation in the second problem?? I dont understand...

[mvaudrey]

@EmpyreanFalling He multiplied (x-2) to the top and bottom of the first fraction. This is like multiplying by one; it doesn't change the value of the fraction, just how it looks. Now the two fractions have the same denominator, so they can be added.

[chasecolin22]

what grade are you guys in cause im in 8th and did this awhile ago... wondering if my school advanced or not...

[Djcrazykidd]

He's a little fast

[1159877]

FUCK THIS

[scout6686]

math is all about being calm and being persistant

I feel the same as you about trig proofs and 2 years from now it'll something else haha

[vandepu93]

Luxollid, he was looking for a number that was divisible by both 12 and 147, which he found would be 3. So he factored a 3 out of each number, the 12 and the 147, and he was left with 4 and 49. Hope that helped. =D

[JoshBJan94]

I have a test on this tomorrow and I know I failed it.

I hate algebra 2

[luxollidd]

he said something about 147 being divisible

something like 1 + 4 = 5 , 5 + 7 = 12

then thats make 147 is divisible

wtf?

can anyone explain how this method works?

thanks

[IntensePizza]

Just makes it easier to find a number that is divisible by 147 so 1+4=5. 5+7=12 now, you to have to find what 12 is divisible by. In this case 12 is ONLY divisible by --2,3,4,6-- so now you look at your last number of 147...so 7....and see if it's odd or not. In this case it's odd so the only odd number in our selection

(2,3,4,6) is 3! Then you can check the answer.

[areurdytoparty]

yes...

he said that if you add all the digits in a number and if it's divisible by three, then it's divisible by three.

for example, take 147. do 1+4+7

that equals to 12. since 12 is divisible by three, you know now that 147 is also divisible by three

[luxollidd]

well ok..lets use other number...

5352 is divisible by 3...then there is surely a value when 5352 is divided by 3...is that it?

and what about him saying that odd number selection?

lets say 5+3+5+2 = 15

so its divisible by 3,5,15

but we got 3 odd here.........so which one will be used? the lowest or any will do?

and i don't think that 5 or 15 can be multiplied to 5352....since the last number is 2

[areurdytoparty]

no, this rule only applies to the number three, so you can't say that it is divisible by 15 or 5

[luxollidd]

oh ok...thanks for showing me

this really helps alot

[VemmaVerve85]

So it only works with 3 digit numbers

[mrhnm]

Pretty sure it only works with three...

[avion105]

add the digits in 147.

1+4+7 = 12

the trick is: since 3 can go into this 12

Then 147 is divisible by 3

[kungfufreak360]

Thanks alot, i have state testing tomorrow and i think this will help alot

[missingmarsupial]

I'm doing this in 8th grade

[banger200]

y is dis poor comment?

[KudoFan32]

It's not helping anyone.

[Winsunn307]

I love your method of teaching. Thanks

[uHkBu]

wut grade is it?

[superyop943]

too hard mna make it easier and more explanation geez

[kungfufreak360]

are you kidding,he makes it so easy