Question

Factorize:
$36-49x^2$

Answer 1

Given expression is $36-49x^2$

We know $a^2-b^2=(a-b)(a+b)$

We can write $36-49x^2=6^2-(7x{)}^2=$$(6+7x)(6-7x)$
Thus factors are $(6+7x)(6-7x)$.