SOLUTION: evaluate the polynomial for x=-1 -4x^3+9x^2-8x-1

Question 380479: evaluate the polynomial for x=-1
-4x^3+9x^2-8x-1
Found 2 solutions by solver91311, rfer:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Just substitute -1 for every place it occurs and do the indicated arithmetic:

John

My calculator said it, I believe it, that settles it

Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
-4*-1+9*1-8*-1-1
4+9+8-1=+20
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