SOLUTION: Factor completely: {{{x^2 + 2mn - m^2 - n^2}}}

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Question 1132146: Factor completely: x%5E2+%2B+2mn+-+m%5E2+-+n%5E2
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
.
x%5E2+%2B+2mn+-+m%5E2+-+n%5E2 = x%5E2 - %28m%5E2+-+2mn+%2B+n%5E2%29 = x%5E2 - %28m-n%29%5E2 = (x+m-n)*(x-m+n).    ANSWER

Solved.