Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(5 - 9i)2
A. -56 - 90i
B. 106 - 90i
C. 25 + 81i
D. 25 - 81i
Answer: A
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Use the accompanying table to find the solutions to the given equation on 
tan ? - cot ? = 0
Y1 = tan(X) - 1/tan(X)
A. 45°, 135°, 225°, 315° B. 0°, 90°, 180°, 270° C. 0° D. None
Solve the problem.The voltage across a resistor is jointly proportional to the resistance of the resistor and the current flowing through the resistor. If the voltage across a resistor is 
for a resistor whose resistance is 
and when the current flowing through the resistor is 
find the voltage across a resistor whose resistance is 
and when the
current flowing through the resistor is 
A. 54 V
B. 12 V
C. 45 V
D. 18 V
Simplify.
A. 
B. 
C. 
D. 
Find a rational approximation, to the nearest tenth, for the radical expression.
A. 
B. 
C. 
D. 
E. 