Solve by the addition method.x2 + y2 = 81x2 - y2 = 81
A. (9, 0), (-9, 0)
B. (9, 0), (9, 9)
C. (9, 9), (-9, 9)
D. No solution
Answer: A
Mathematics
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A. -5
B. 5
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, through (7, 3)
A. y = 
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B. y = 
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C. y = 
x
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9. Simplify the expression
What will be an ideal response?
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