SOLUTION: Find the value of the polynomial x^3-4x when x=-2..How do I do this problem??

SOLUTION: Find the value of the polynomial x^3-4x when x=-2..How do I do this problem??

Algebra.Com

Question 84724: Find the value of the polynomial x^3-4x when x=-2..How do I do this problem??
Answer by wallflower(4) (Show Source): You can put this solution on YOUR website!
What you need to do on this problem is to substitute -2 in for x.
so it will be -2^3-4(-2)
or
(-2)(-2)(-2)-(-8)=
-8+8=0
Hope this helps you.

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