Solve.x2 + y2 = 91 x = y2 - 1
A. (10, -
), (10, 
), (-9, -2i
), (-9, 2i
)
B. (-10, -i
), (-10, i
), (9, -2
), (9, 2
)
C. (-10, -3), (-10, 3), (9, -
), (9, 
)
D. (-10, -3i), (-10, 3i), (9, -
), (9, 
)
Answer: D
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B. 
C. 
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B. 
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D. 
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.
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