Question

polynomials.. I'm doing a problem and I got stuck .. I just need to simplify this: 5x^2+35-3x-21

Answer 1

this is the original problem

Answer 2

@ganeshie8

Answer 3

@jdoe0001 @JFraser @phi

Answer 4

you haven't distributed the multiplication properly. back up and FOIL it again

Answer 5

ok

Answer 6

i got it

Answer 7

its 5x^2 +32x -21 final answer

Answer 8

thnx

Answer 9

well you are almost correct look at the problem, you have 4 terms when you should have 3.

combine the like terms

\[(5x -3)\times (x + 7) = 5x(x + 7) - 3(x + 7)\]

distribute and the like terms will be in x

the 2 correct terms are

\[5x^2 - 21 \]

find the middle term

Answer 10

cupcake111
its 5x^2 +32x -21 final answer

that looks good