Solve the system.x2 + 2xy + y2 = 9x2 + 2xy - y2 = -9
A. {(0, 3), (0, -3), (6, 3), (6, -3)}
B. {(0, 3), (0, -3), (6, 3), (-6, -3)}
C. {(0, 3), (0, -3), (-6, 3), (-6, -3)}
D. {(0, 3), (0, -3), (-6, 3), (6, -3)}
Answer: D
Mathematics
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Factor completely using the grouping method to factor trinomials. If unfactorable, indicate that the polynomial is prime.12z2 + 7z - 12
A. (3z - 4)(4z + 3) B. (12z + 4)(z - 3) C. prime D. (3z + 4)(4z - 3)
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Evaluate the line integral of f(x,y) along the curve C.f(x, y) = x, C: y = x2, 0 ? x ? 
A. 
B. 63
C. 21
D. 
Mathematics
Simplify and add or subtract wherever possible.30
- 11
A. 41
B. 209
C. 19
D. 19
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Find the exact value of the expression.
A. 
B. 
C. 
D. 2
Mathematics