यदि x^2 - y^2 -1 -2y =0 हो तो x^2 + y?^2 का मा� – McqOptions

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1.	यदि x^2 - y^2 -1 -2y =0 हो तो x^2 + y?^2 का मान होगा ?
A.	3
B.	8
C.	1
D.	-7
Answer» D. -7

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