# How do you multiply (7x + 5)(8x + 8)?

May 16, 2018

$56 {x}^{2} + 96 x + 40$
Both terms in the second bracket are multiplied by $7 x$ and then both are multiplied by $5$.
$\left(7 x + 5\right) \left(8 x + 8\right) = 56 {x}^{2} + 56 x + 40 x + 40$
$56 {x}^{2} + 96 x + 40$