# Math Help - Expanding

1. ## Expanding

I need to see if I have this figured right. The problem to solve is: 7p2(4p-5)-(4p-5). I got -112p4-140p3+20p+25

2. Originally Posted by Peggy
I need to see if I have this figured right. The problem to solve is: 7p2(4p-5)-(4p-5). I got -112p4-140p3+20p+25
If this is
$7p^2(4p-5)-(4p-5)$
then you are not solving it you are simplifying it. And, no, it is not correct:
$7p^2(4p-5)-(4p-5) = 28p^3 - 5p^2 - 4p + 5$

-Dan