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September 19, 2014

September 19, 2014

Posted by **luz** on Sunday, March 31, 2013 at 2:37am.

x^2 + 6xy - 135y^2

- math -
**Steve**, Sunday, March 31, 2013 at 4:59amwe need two factors of 135 which are close to its square root : ~= 12

So, 9,15?

(x-9y)(x+15y)

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