Perform the indicated operation. Write the result in standard form.(
- 3i)(
+ 3i)
A. 17
B. 14 - 9i
C. 23
D. 14 + 9i
Answer: C
Mathematics
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Reduce the fraction by finding a common factor in the numerator and in the denominator and dividing by the common factor.
A. 
B. 
C. 
D. 
Mathematics
Identify the equation without completing the square.3x2 + 2y2 + 7x - 4 = 0
A. parabola B. circle C. ellipse D. hyperbola
Mathematics
Solve the system. w + 3x - 2y - z = -4 4w + x + y + 2z = 15-3w - x - 3y - 2z = -18 w - x - 3y - 2z = -14
A. {(1 + z, 1 - 2z, 2 + 2z, z)} B. {(-4, 15, -18, -14)} C. {(1, 1, 2, 4)} D. {(0, 3, -2, 6)}
Mathematics
Multiply, then simplify the product. Assume that all variables represent positive real numbers.(3 + 
)2
A. 10 + 6
B. 16 + 3
C. 9 + 6
D. 16 + 6
Mathematics