SOLUTION: Given f(x) = -x^3 + 3x^2 - x + 4 find f(-2) Did I do this correctly? f(-2) = -(-2)^3 + 3(-2)^2 - -2 + 4 f(-2) = -(-8) + 3(4) +2 + 4 f(-2) = 8 + 12 + 2 + 4 f(-2) = 24

Algebra ->  Expressions-with-variables -> SOLUTION: Given f(x) = -x^3 + 3x^2 - x + 4 find f(-2) Did I do this correctly? f(-2) = -(-2)^3 + 3(-2)^2 - -2 + 4 f(-2) = -(-8) + 3(4) +2 + 4 f(-2) = 8 + 12 + 2 + 4 f(-2) = 24      Log On


   

Question 38444: Given f(x) = -x^3 + 3x^2 - x + 4
find
f(-2)

Did I do this correctly?

f(-2) = -(-2)^3 + 3(-2)^2 - -2 + 4
f(-2) = -(-8) + 3(4) +2 + 4
f(-2) = 8 + 12 + 2 + 4
f(-2) = 24
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Looks fine to me, except for the very last step.
8 + 12 + 2 + 4 = 26.