Question

find value of p(x)=2x³-3x²+5x-6 at x=1 and x=-1​

Answer 1

for x=1

p(1)=2(1)³-3(1)²+5(1)-6

=2-3+5-6

p(1) = -2

for x= -1

p(-1)=2(-1)³-3(-1) ²+5(-1)-6

= -2-3-5-6

= -16