Answers

2015-07-13T21:37:48+05:30
=(x-b)(a-b)=(x+b)(a+b)
=x ^{2} -xb-ab+b ^{2} = x^{2} +xb+ab+b ^{2}
-ab-ab=xb+xb
=2bx=-2ab
Cancelling 2b from both sides we get
=x=-a
Ans:x=-a
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