Solve the following system by any appropriate method. If there is no real number solution, so state.9x2 + y2 = 819x2 - y2 = 81

A. (0, 9), (0, -9)
B. (9, 0), (-9, 0)
C. (3, 0), (-3, 0)
D. (0, 3), (0, -3)


Answer: C

Mathematics

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