Question

2p2+3p-4 less -2p2-3p+4

Answer 1

2p^2 + 3p - 4 - (-2p^2 - 3p + 4) =
2p^2 + 3p - 4 + 2p^2 + 3p - 4 =
4p^2 + 6p - 8 <==

Answer 2

`4p^(2)+6p-8`

Explanation:

Being a subtraction of polynomials, the second polynomial will change the signs of its terms and then the algebraic sum is done.

`2p^(2) -3p-4 - (-2p^(2) -3p+4)`

changing the signs

`2p^(2) -3p-4 +2p^(2)+3p-4`

performing indicated operations

`4p^(2)+6p-8`