Solve the equation in the complex number system.x2 + 4 = 0
A. {-2, 2}
B. {-2i, 2i}
C. {2i}
D. {2}
Answer: B
Mathematics
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Graph the pair of parametric equations with the aid of a graphing calculator.x = cos 5t, y = sin 2t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.
a = 0
A. {19} B. {-19} C. {1} D. {0}
Mathematics
Perform the indicated operation.57.7 mm - 1.56 cm (in centimeters)
A. 56.14 cm B. 42.1 cm C. 4.21 cm D. 575.44 cm
Mathematics
Solve the problem.Evaluate 
by expanding across the third row. Show all your work.A = 
What will be an ideal response?
Mathematics