SOLUTION: Evaluate P(-1/2) if P(x) = 2x4 + x3 + 12

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Question 47744:
Evaluate P(-1/2) if P(x) = 2x4 + x3 + 12
Answer by pizza(14) About Me  (Show Source):
You can put this solution on YOUR website!
Do you mean
+P%28x%29+=+2x%5E4+%2B+x%5E3+%2B+12+
If so, the question is a straightforward exercise in evaluating functions.
+P%28-1%2F2%29+=+2%28-1%2F2%29%5E4+%2B+%28-1%2F2%29%5E3+%2B+12+
What I have done is to replace every instance of x with (-1/2)
This gives
2(-1/2)^4 + (-1/2)^3 + 12
= 2(1/16) + (-1/8) + 12
= 1/8 - 1/8 + 12
= 12