- how to factor y^2+2xy-15x^2?

( y + 5x ) ( y - 3x )

y^2 + 2xy - 15x^2
=> y^2 + (5xy - 3xy) - 15x^2
=> y*(y + 5x) - 3x*(y+5x)
=> (y-3x)(y+5x)
:)

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Answer #1| 08/02 2014 10:1566 %