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December 3, 2016

Homework Help: math

Posted by lomas on Wednesday, October 27, 2010 at 10:31am.

having trouble factoring this particular problem

x^2-12x+36-49y2

factored by grouping

x(x-12) (7y-6) (7y+6)

the answer in the book has
(x-6+7y)(x-6-7y)

confused.

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