Question

PLEASE HELP!!!

Is x − 8 a factor of the function f(x) = −2x^3 + 17x^2 − 64? Explain.

Answer 1

@mathmate

Answer 2

What is the estimated sum? Round each addend to the nearest thousand before adding.

75,364 + 472,756

Answer 3

first factor -1 we get\[-(2x ^{3}-17x ^{2}+64)\]\[-(x-8)(2x ^{2}-x-8)\]

Answer 4

so x-8 is a factor?

Answer 5

yep

Answer 6

thanks :)

Answer 7

well you can solve x-8 for x
set it equal to 0\[\rm x-8=0\]
x=8 now substitute all x for 8 into f(x) if you get 0 then yes x-8 is a factor