यदि 3x +2y =12 तथा xy= 6 हो, तो 9x^2 + 4y^2 का – McqOptions

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1.	यदि 3x +2y =12 तथा xy= 6 हो, तो 9x^2 + 4y^2 का मान कितना होगा ?
A.	78
B.	65
C.	34
D.	72
Answer» E.

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