Sama188
Sama188
28-07-2014
Mathematics
contestada
Factorize : a2 + b2 _ 2(ab - ac + bc ).
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pepe11
pepe11
28-07-2014
(a² + b² - 2ab) + 2ac - 2bc = (a - b)² + 2c(a-b) = (a-b)(a-b +2c)
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