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Mathematics 9 Online
OpenStudy (anonymous):

can someone help me factorise 5x2 - 15xy - 20y2

OpenStudy (anonymous):

This is what I get when I factor it -5 (3 x y+4 y^2-2)

OpenStudy (texaschic101):

5x^2 - 15xy - 20y^2 5(x^2 - 3xy - 4y^2) 5(x + y)(x - 4y)

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