If a(x+y)=b(x-y)=2ab, then the value of 2(x²+y²) is
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4(a^2+b^2)
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Explain the half part
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ए स्क्वायर माइनस बी स्क्वायर माइनस बी स्क्वायर प्लस टू ए बी
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