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= x2 + y2 +1 + 1 = 4, then the value of x2 + y2 i...
1.
= x2 + y2 +1 + 1 = 4, then the value of x2 + y2 is x2y2
A.
2
B.
4
C.
8
D.
16
Answer» B. 4
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