Question

[(x+7)(x^{3}+3x-9)\]

Answer 1

whatcha supposed to do with it?

Answer 2

\[(x+7)(x^{3}+3x-9) \]

Answer 3

multiply

Answer 4

x^3 + 3x^2 - 9x + 7x^2 + 21x - 63

now combine like terms!

Answer 5

x^3 + 10x^2 + 12x -63

Answer 6

do add or multiply the terms

Answer 7

I think some of the x^3 terms turned into x^2 terms in the previously submitted solutions.

\[(x+7)(x^3+3x-9)\]\[x^4+3x^2-9x+7x^3+21x-63\]Combine like-terms:
\[x^4+7x^3+3x^2+12x-63\]