Answer
$x$
Work Step by Step
$3x^4=3\times \underline x\times x^3$
$5x^7=5\times \underline x\times x^6$
$10x= 2\times5\times \underline x$
$GCF=x$
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.