Question

if p= - 2 then value of (2p cube +3p square -4p-7)

Answer 1

=2p^3+3p^2-4p-7
=2(-2)^3+3(-2)^2-4(-2)-7
=2(-8)+3(4)+8-7
=-16+12+8-7
=-23+20
=-3
Ur ans is -3

Answer 2

All you have to do is substituting the value of p with multiplying it by the number given and then addibg or subtracting.