So we have our final exam on monday... so im doin the review.

I tried problems 1-10.. and got 1 right -_-. I fear i am doomed. Lol.

but anyway..

1. (5x+7)^2

Seems ridiculously easy to me..

Heres what i tried...

turned it into

(5x+7)(5x+7)

FOIL

25x^2*5x*7*7*5x*49

25x^2*10X*49*49

it says the answer is 25x^2+70x+49

--------

7. x^2+x-2 / x^3+x^2 * x / x^2+3x+2

Heres what i did:

= x^3 + x^2 - 2x / x^10+3x^7 + 2x^5

= 1 / x^7+3x^5+x^4

It says the answer is

x-1 / x(x+1)^2

can someone give me a review on this? XD there's probably some little thing im doing wrong.....