Question

 Evaluate the polynomial function p (x) = 2x4 - 3x2 + x - 1 to find p (-1).

Answer 1

$p(x)=2x^4-3x^2+x-1\\\\ Substitude\ p=-1\ into\ equation\\\\ p(-1)=2x^4-3x^2+x-1=2*(-1)^4-3(-1)^2-1-1=\\2*1-3*1-2=2-3-2=-3\\Answer\ p(-1)=-3$