Question

question
factor completely.
$144x^2 - 121$

Explanation:

Step1: Identify difference of squares

Recognize $144x^2-121$ as $a^2-b^2$, where $a=12x$, $b=11$.

Step2: Apply difference of squares formula

Use $a^2-b^2=(a-b)(a+b)$
<Expression>
$144x^2 - 121 = (12x)^2 - 11^2 = (12x-11)(12x+11)$
</Expression>

Answer:

$(12x-11)(12x+11)$