Question

evaluate the polynomial -x^4-3+4x^2+2 when x=-1

Answer 1

the given expression is,

$=-x^4-3+4x^2+2$

put x = -1 in the above expression

$\begin{gathered} =-(-1)^4-3+4(-1)^2+2 \\ =-1-3+4+2 \\ =2 \end{gathered}$

so the answer is 2