Question

if p (x) = xcube - xsquare + x +1 ,then find 1/2 (p(-1)+p(1))

Answer 1

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Answer 2

p(1)=1-1+1+1=2
p(-1)=-1-1-1+1=-2
1/2(p(1)+p(-1))=1/2(0+0)=0