2
factorise y - 2y-15
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Y^2-2y-15
=y^2-5y+3y-15
=y(y-5)+3(y-5)
y=5 ory y=-3
=y^2-5y+3y-15
=y(y-5)+3(y-5)
y=5 ory y=-3
Srividyashivakumar:
kuch be nahi
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