Determine the real solutions to the system of nonlinear equations.x2 + y2 - 4x + 4y + 7 = 0 x2 - y2 - 4x - 4y - 1 = 0
A. (3, -2), (1, -2)
B. (3, -2), (-1, -2)
C. (2, 1), (2, 3)
D. (2, -1), (2, -3)
Answer: A
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A. y = - 
x - 
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