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Q:

यदि $$ {(2x-5y)^{3}-(2x+5y)^{3}=y{[A{x}^{2}+B{y}^{2}]}}$$,  है तो $$ {(2A-B)}$$ का मान क्या होगा?

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    10
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    15
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Answer : 2. "10"

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