SOLUTION: I need to evalutate this problem but not sure how to do it. Evaluate P(-1/2) if P(x) = 2x4 + x3 + 12

Algebra ->  Real-numbers -> SOLUTION: I need to evalutate this problem but not sure how to do it. Evaluate P(-1/2) if P(x) = 2x4 + x3 + 12      Log On


   



Question 63766: I need to evalutate this problem but not sure how to do it.
Evaluate P(-1/2) if P(x) = 2x4 + x3 + 12

Answer by Earlsdon(6294) 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
Substitute x+=+-1%2F2
p%28-1%2F2%29+=+2%28-1%2F2%29%5E4+%2B+%28-1%2F2%29%5E3+%2B+12 Simplify:
p%28-1%2F2%29+=+2%281%2F16%29+%2B+%28-1%2F8%29+%2B+12
p%28-1%2F2%29+=+1%2F8+-+1%2F8+%2B+12
p%28-1%2F2%29+=+12