Answer
$10x^2-7x$
Work Step by Step
Subtract each term to obtain:
$(9x^2-3x)-(4x-x^2)
\\=9x^2-3x-4x-(-x^2)
\\=9x^2-3x-4x+x^2$
Combine like terms to obtain:
$=(9x^2+x^2)+(-3x-4x)
\\=(9+1)x^2+(-3-4)x
\\=10x^2+(-7x)
\\=10x^2-7x$
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.