Answer
$49x^2 - 42x + 6$
Work Step by Step
$(7x-3)^2 = (7x)^2 - 2 (3) (7x) + (3)^2 = 49x^2 - 42x + 6$
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.