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

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Question 143368: Evaluate P(-1/2) if P(x) = 2x4 + x3 + 12
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
Evaluate P%28-1%2F2%29 if P%28x%29+=+2x%5E4+%2B+x%5E3+%2B+12
just plug in x=+-%281%2F2%29
P%28-1%2F2%29+=+2%28-1%2F2%29%5E4+%2B+%28-1%2F2%29%5E3+%2B+12
P%28-1%2F2%29+=+2%28%28-1%29%5E4%2F2%5E4%29+%2B+%28%28-1%29%5E3%2F2%5E3%29+%2B+12
P%28-1%2F2%29+=+cross%282%29%281%2Fcross%2816%298%29+-1%2F8+%2B+12
P%28-1%2F2%29+=+cross%28%281%2F8%29%29+-cross%281%2F8%29+%2B+12
P%28-1%2F2%29+=+12