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OpenStudy (anonymous):
Solve. 3x2 = -15x + 21
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OpenStudy (anonymous):
bring everything to the left side
OpenStudy (anonymous):
3x^2+15x-21=0
OpenStudy (anonymous):
divide both sides by 3
OpenStudy (anonymous):
x^2+5x-7=0
OpenStudy (anonymous):
I got to here but what do I do next
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OpenStudy (anonymous):
plug into the quadratic equation if u can't factor
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