Question

(2a +3)x (2a-3)
how can you solve it? ​

Answer 1

Answer:

Identity-

(a-b) x(a+b)= a²-b²

$\bf \red{ = {(2a)}^{2} - {3}^{2} }$

$\: \: \green{\boxed{ = 4 {a}^{2} - 9}}$

Plz thanks

Answer 2

Answer:

this is quite easy but

First of all you should know this identity
(a+b)(a-b ) = $a^{2} - b^{2}$
Applying this you can get the answer as
$4a^{2} -9$