# How do you multiply (7-a)^2 ?

Jun 16, 2018

${a}^{2} - 14 a + 49$

#### Explanation:

${\left(7 - a\right)}^{2}$

$= {\left(7\right)}^{2} + 2 \left(7\right) \left(- a\right) + {\left(- a\right)}^{2}$

$= 49 - 14 a + {a}^{2}$

If you want the powers written in order:

$= {a}^{2} - 14 a + 49$