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OpenStudy (anonymous):
please help add (7x^2-7x+13)+(8x^2+9-69)
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OpenStudy (anonymous):
7x^2-7x+13+8x^2+9-69 15x^2-7x-47
OpenStudy (gw2011):
Is that 9 supposed to be 9x or is it really just 9?
OpenStudy (anonymous):
just 9
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