A 3
B 4
C 5
D 6
Correct Answer: Option D
x-y = 2 ------- (1)
(x+y)2 = (x - y)2 + 4xy = 22 + 4*24 = 4 + 96 = 100
x + y =10 ----- (2)
(1) + (2)
2x = 12
x = 6
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