Solve.y2 = x + 7x + 3y = 21
A. (9, 4), (42, -7)
B. (21, 0), (-7, 0)
C. (9, 4)
D. (9, -4), (-7, 0)
Answer: A
Mathematics
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C. ?
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A. 132x12 + 55x7 B. 132x7 + 55x5 - 121 C. 132x12 + 5x5 - 11 D. 132x12 + 55x7 - 121x5
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Solve.Multiply: (2 + 
)(1 - 
)
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Find the reciprocal of the number or expression. Assume variables do not cause any denominators to equal 0.
A. 
B. 
C. -19
D. 
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