Answers

2015-12-13T13:11:35+05:30
X(x-z)+y(x-z)
(x+y)(x-z)
this its factorisation.
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2015-12-13T18:42:29+05:30
> x² - xz + xy - yz
> x ( x - z ) + y ( x - z )
> ( x - z ) ( x + y )
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