Answer
$8.4y^{7}$
Work Step by Step
$-1.2y(-7y^{6})=-1.2\times-7\times y^{1+6}=8.4\times y^{7}=8.4y^{7}$
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.