SOLUTION: Let H(x)= 2x^3 + 5x - 2 Find H^(-1) (-2).

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Question 436845: Let H(x)= 2x^3 + 5x - 2
Find H^(-1) (-2).
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!

==> 2%2A%28H%5E%28-1%29%28-2%29%29%5E3+%2B+5%2A%28H%5E%28-1%29%28-2%29%29+=+0
==> %28H%5E%28-1%29%28-2%29%29%282%28H%5E%28-1%29%28-2%29%29%5E2+%2B+5%29+=+0
==> H%5E%28-1%29%28-2%29+=+0
***Think of it this way: H(0) = -2, and so 0+=+H%5E%28-1%29%28-2%29.