Solve the following system by any appropriate method. If there is no real number solution, so state.xy = 1-20x - y = 9
A. (4, -4), (5, -5)
B. (-4, - 
), (-5, - 
)
C. (- 
, -4), (- 
, -5)
D. no real solution
Answer: C
Mathematics
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?
__________
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