Question

Using suitable identity find (2+3x) (2-3x)

Answer 1

Hlo friend...

(2+3x) (2-3x)
[Using identity = (a+b) (a-b) = a²-b²
➡️ (2)² - (3x)²
➡️ 4 - 9x²

Answer is 4 - 9x²

HOPE IT HELPS YOU..

REGARDS
@sunita

Answer 2

Dear student,
By using Identity 111 we can solve it like this.
(a+b) (a-b) = a^2 - b^2
Therefore, (2+3x) (2-3x)
= 2^2 - 3x^2
=4-9x^2

l hope it helps you and you understand too.