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January 25, 2015

January 25, 2015

Posted by **Anonymous** on Saturday, February 26, 2011 at 6:17am.

- Maths -
**Reiny**, Saturday, February 26, 2011 at 8:56ambecause of the - in the middle and + at the end,

I know both signs must be -

it could be (5x...)(5x....) or (x...)(25x...)

at the end it could be (... -2y)(...-3y) or (...-1y)(....-6y)

after two tries I got

(5x-2y)(5x-3y)

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