A^2-2ab+B^2 is actually (A+B)^2
AB squared is A^2B^2 or (AB)^2
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It is: 2b squared
It is b*b
B squared equals c squared minus a squared then to find B take the square root of you answer for b squared
a squared - b squared = (a+b)(a-b)
No. If you expand (a + b)2 you get a2 + 2ab + b2. This is not equal to a2 + b2