Question

(3+2a)(3-2a) using formula (a+b)(a-b)

Answer 1

Answer:

(3+2a)(3-2a)

=(3)^2+(2a)^2

=9+4a^2

Answer 2

Answer:

$= (3 + 2a)(3 - 2a)$

using identity ,

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

$= {3}^{2} - {2a}^{2}$

$= 9 - 4 {a}^{2}$