Question

Simplify it

`((6r+9p)(6r-9p))/(3) +( 7p+2(r - 3p))(8r - 2p)`
thanks. ​

Answer 1

28r^2 - 29p^2 + 4rp

Explanation:

(2r+3p)(6r-9p)+(p+2r)(8r-2p) = 12r^2-18rp+18rp-27p^2+8rp-2p^2+16r^2-4rp =

28r^2 - 29p^2 + 4rp