Solve the system by the addition method.x2 - 2y2 = 23x2 + 2y2 = 14
A. {(1, 2), (-1, 2), (1, -2), (-1, -2)}
B. {(-1, 2), (1, -2)}
C. {(2, 1), (-2, -1)}
D. {(2, 1), (2, -1), (-2, 1), (-2, -1)}
Answer: D
Mathematics
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= 
- 
A. -2, -7
B. 2, 7
C. 
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