Indicate whether the statement is true always, sometimes, or never.The product of a pair of complex conjugates is a real number.
A. Always
B. Sometimes
C. Never
Answer: A
Mathematics
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Solve the system of equations.
A. x = 3z + 5 y = z - 2 z = any real number B. x = -3z - 5 y = z + 2 z = any real number C. inconsistent (no solution) D. x = z - 2 y = -3z - 5 z = any real number
Mathematics
Identify the equation without completing the square.4x2 + 2y2 + 7x - 2y = 0
A. parabola B. hyperbola C. ellipse D. not a conic
Mathematics
Multiply or divide.(-19)(-7)
A. 133 B. -152 C. 152 D. 140
Mathematics
For problems 3-15, use guess and check or the 
method to completely factor each polynomial. If the polynomial is prime, indicate that fact.
A. 
B. 
C. 
D. prime
E. none of these
Mathematics