middle term splitting of y square + 9 Y - 3y + 27
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Step-by-step explanation:
y^2+9y-3y+27
⇒y^2+6y+27=0
=y^2+9y+3y-27=0
=y(y+9)+3(y-9)=0
=(y+3)(y-9)=0
∴y= -3,y=9
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