Question

If p(x)=3x³+2x²-x-1findp(-1)

Answer 1

I hope you understand it...

Answer 2

$p( - 1) = 3( { - 1}^{3}) + 2( { - 1}^{2}) - ( - 1) - 1 \\ p( - 1) = 3( - 1) + 2 + 1 - 1 \\ p( - 1) = - 3 + 2 \\ p( - 1) = - 1$