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Mathematics 9 Online
OpenStudy (anonymous):

(4x-7)(4x-7)

OpenStudy (anonymous):

8x^2-56x+49

OpenStudy (anonymous):

can you show me the work so i understand how to do the rest of them?

OpenStudy (anonymous):

Yeah 1 sec

OpenStudy (anonymous):

It is called the FOIL method. First, Outside, Inside, Last. Multiply What would be 4x and 4x then 4x and -7 and 4x and -7 and combine them then multiply - 7 and -7. You get a trinomial. Any questions?

OpenStudy (anonymous):

awesome, thank you so much can i ask you one more question?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

(x^2=2x-35)/(x=7)

OpenStudy (anonymous):

is that a fraction or division?

OpenStudy (anonymous):

division, sorry.

OpenStudy (anonymous):

i am not too sure exactly what you are asking sorrry

OpenStudy (anonymous):

i just dont understand what i have to do to get the answer im confused

OpenStudy (anonymous):

you need to find x^2?

OpenStudy (anonymous):

no i just have to perform the division (x^2+2x-35)\[\div\]

OpenStudy (anonymous):

(x+7)

OpenStudy (anonymous):

there is a change in the problem....you originally had equal signs..... I am confused sorry.

OpenStudy (anonymous):

ohh im sorry on my mac the equal and plus sign is the same button the last way i wrote it is correct im so sorry

OpenStudy (anonymous):

to get it straight sorry..... (x^2+2x-35)รท (x+7)

OpenStudy (anonymous):

exactly

OpenStudy (anonymous):

ok give me a minute

OpenStudy (anonymous):

k

OpenStudy (anonymous):

working it out

OpenStudy (anonymous):

ok u still here? U are going to have to reverse foil

OpenStudy (anonymous):

im here

OpenStudy (anonymous):

huh?

OpenStudy (anonymous):

first step is (x+7)(x-5) Divided by (x+7) you get the two parenthesses if you FOIL those like before ypou get the original problem

OpenStudy (anonymous):

im confused

OpenStudy (anonymous):

okay remember how i showed you FOIL?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

im still getting confused when i try to divide it out

OpenStudy (anonymous):

i see okay. You are in what grade if i may ask?

OpenStudy (anonymous):

im in college, but this is the class before my college algebra class. i tested into it, im in honors everything else and beginners math hahahaha

OpenStudy (anonymous):

ha being in Advanced Algebra 1 in 8th grade we learned this this year sorry having some small trouble. Going to figure it out though.

OpenStudy (anonymous):

thank you so much, im trying my best and it is just frustrating im a college sophmore doing freshman in hs work

OpenStudy (anonymous):

yeah i understand. Not from a personal perspective but you know.

OpenStudy (anonymous):

how do i solve it?

OpenStudy (anonymous):

ok going to go backwards it took me a while but i have figured out an example to show you . Divide x^2+2x-3 by x-1 it is similar

OpenStudy (anonymous):

x-1 (inside division box is the next trinomial) x^2+2x-3 Okay?

OpenStudy (anonymous):

okay

OpenStudy (anonymous):

Ok so you will divide it out like a normal "long division problem"

OpenStudy (anonymous):

ohh okayy, that makes it a tad clearer

OpenStudy (anonymous):

okay Think: x^2 Divided by x=? Multiply x and x-1 Subtract x^2-x from x^2+2x Okay?

OpenStudy (anonymous):

okay hold on im doing it ill send you my answer hold on

OpenStudy (anonymous):

okay

OpenStudy (anonymous):

i tried to work it out and typed it in my math way and it says there is no answer, did you get an answer?

OpenStudy (anonymous):

the answer to the whole problem is x+3

OpenStudy (anonymous):

how did you get that? im confused

OpenStudy (anonymous):

Well i gave u step 1. U should get x x-1(Box)x^2+2x-3 x^2-3 3x

OpenStudy (anonymous):

what is box?

OpenStudy (anonymous):

sorry CPU is slow. A division box like for long division

OpenStudy (anonymous):

..............

OpenStudy (anonymous):

sorry if i could not help. Good bye

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