Answer
$\text{(b) }$
Work Step by Step
$x^{2}$ is the square of $x$, while $64$ is the square of $8$.
This is a difference of squares of $x$ and $8$.
The given expression can be written as:
$x^{2}-64=x^{2}-8^{2}$
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.