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OpenStudy (anonymous):
(-9x^2+3x-7)+(-4x^2-x) got: -13x^2+2x-7
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sam (.sam.):
\[\Huge \checkmark\]
Parth (parthkohli):
And a\[\Huge \checkmark\]to the check. :-D
OpenStudy (dwelsher):
right answer
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