If xy = b and -2 + -2 = a, then (x + y )2 equals:
X y
(A) (a + 2b )2· · (C) b (ab + 2)
1
(D ) -+ 2b
If xy = b and -2 + -2 = a, then (x + y )2 equals:
X y
(A) (a + 2b )2· · (C) b (ab + 2)
1
(D ) -+ 2b
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