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Brrunno [24]
3 years ago
14

Factor using ac-method,  15y+6y²-21= ________

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
3 0
15y+6y^2-21=\\
6y^2+15y-21=\\
3(2y^2+5y-7)=\\
3(2y^2-2y+7y-7)=\\
3(2y(y-1)+7(y-1))=\\
3(2y+7)(y-1)

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