Question

use suitable identity (a+9)2 ​

Answer 1

Answer:

$•°• \: {(a + 9)}^{2} = {a}^{2} + 18a + 81$

Step-by-step explanation:

We have to use the identity-

${(a + b)}^{2} = {a}^{2} + 2ab + {b}^{2}$

$= {(a + 9)}^{2}$

$= {a}^{2} + 2(a)(9) + {9}^{2}$

$= {a}^{2} + 18a + 81$

Adiós! Hope this helps you.

Answer 2

Hiiiiii hope this helps