Simplify the expression. Use positive exponents. Assume variables represent nonnegative numbers.
4
A. 625x4
B. 
C. 
D. 
Answer: B
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Complex numbers are used in electronics to describe the current in an electric circuit. Ohm's law relates the current in a circuit, I, in amperes, the voltage of the circuit, E, in volts, and the resistance of the circuit, R, in ohms, by the formula 
Solve the problem using this formula.Find E, the voltage of a circuit, if I = (2 + 3i) amperes and R = (9 + 5i) ohms.
A. (3 + 37i) volts B. (37 + 3i) volts C. (3 - 37i) volts D. (37 - 3i) volts
Find the vertex and axis of symmetry of the graph of the function.f(x) = -x2 - 10x - 6
A. (-5, 19) ; x = -5 B. (5, -81) ; x = 5 C. (5, -31) ; x = 5 D. (-10, -6) ; x = -10
Evaluate the expression.[[-13]]
A. -13 B. -14 C. -12 D. 13
Use DeMoivre's Theorem to find the indicated power. Write the answer in rectangular form.
10
A. - 
+ 
i
B. 
+ 
i
C. - 
- 
i
D. 
- 
i