if 2(a^2+b^2)=(a+b)^2,then show a=b
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Answer:
2(a²+b²)=(a+b)²
2a²+2b²=a²+2ab+b²
2a²-a²+2b²-b²-2ab=0
a²+b²-2ab=0
(a-b)²=0
a-b=√0
a-b=0
a=b
LHS=RHS
Hence proved
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