Question

There's a rectangle. The width is 6p + 4 and the length is 2p + 1. Simplify your expression.

Answer 1

You do not say but I suspect you want the area.
Area = (6 p + 4)(2 p + 1)
= 12 p^2 + 6 p + 8 p + 4
= 12 p^2 + 14 p + 4

Answer 2

Sorry I forgot to put PERIMETER, I'm so sorry.