SOLUTION: (a+b)^2-(c+d)^2 How do you factorize?

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Question 601327: (a+b)^2-(c+d)^2
How do you factorize?
Answer by flame8855(424) About Me  (Show Source):
You can put this solution on YOUR website!
assume A= a + b
and B= c+d
so substitute
A^2 - B^2
= (A-B)(A+B)
= (a+b-c-d) (a+b+c+d)