Question

if p(x) x3 +3x2 -2x+4 then find the value of p(2)+p(-2)-p(0)

Answer 1

p(2) = 2^3 + 3(2^2) - 2(2) + 4 = 8+12-4+4 = 20

p(-2) = -8+12+4+4 = 12

p(0) = 0+0-0+4 = 4
................................

20+12-4 = 28

Answer 2

p(2)=2^3+3(2)^2-2(2)+4
=8+12-4+4
p(2) =20...........(1)
p(-2)=-8-12+4+4
=4
p(0)=4
p(2)+p(-2)-p(0)=20+4-4=20