Answer
$(6m^{2}+7)^{2}$
Work Step by Step
$36m^{4}+84m^{2}+49$
...write as the square of a binomial.
...($a=6m^{2},\ b=7,\ \quad $test the middle term:
$2ab=2(6m^{2})(7)=84m^{2}$)
$=(6m^{2}+7)^{2}$
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.