Answer
$f'(x)=2g(x)g'(x)$
Work Step by Step
Given:
$f(x)=[g(x)]^2$
By using power rule;
$f'(x)=2[g(x)].g'(x)$
Hence,
$f'(x)=2g(x)g'(x)$
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.