Work Step by Step
Given:$1-81x^2y^2$ Equation can be written as: $=(1)^2-(9xy)^2$ Since, $a^2-b^2=(a-b)(a+b)$ Hence, $(1-9xy)(1+9xy)$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.