Divide (15y² – 45y)(y² -16) by 5( y² – y – 12)
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❥︎ANSWER
10xy(14y2+43y−21)÷5x(7x−3)
=5x(7y−3)10xy[14y2+49y−6y−21]
=5x(7y−3)10xy[7y(2y+7)−3(2y+7)]⎩⎪⎪⎨⎪⎪⎧∵−21×14=−294∴−249=49×(−6)43=49−6⎭⎪⎪⎬⎪⎪⎫
=5x(7y−3)10xy(2y+7)(7y−3)
=2xy(2y+7)
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