Evaluate the polynomial f(x) =2x^3-4x^2+2x-8. At x=-2
2 answers:
Answer:
-44
Step-by-step explanation:
If f(x) =2x^3-4x^2+2x-8 where x=-2
You replace all of the "x's" for -2s. Like so..
2(-2)^3-4(-2)^2+2(-2)-8
it would = -44.
Answer:
f(- 2) = - 44
Step-by-step explanation:
Substitute x = - 2 into f(x) and evaluate, that is
f(- 2) = 2(- 2)³ - 4(- 2)² + 2(- 2) - 8
= 2(- 8) - 4(4) - 4 - 8
= - 16 - 16 - 4 - 8
= - 44
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