Question

Factorize the following by using suitable identity
9 – 4x²​

Answer 1

Answer:

$(3+2x)(3-2x)$

Explanation:

Identity - $a^2 -b^2=(a+b)(a-b)$

$9-4x^2\\= (3)^2-(2x)^2\\= (3+2x)(3-2x)$