Write the expression as a pure imaginary number.
A. -2
i
B. -2
C. 2
i
D. 2
Answer: C
Mathematics
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Solve the quadratic equation.5x2 - 9x - 2 = 0
A. -5, 2
B. - 
, 5
C. - 
, 2
D. 
, - 
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Solve the formula for the specified variable.I = 
for n
A. n = 
B. n = IR(Ir - E)
C. n = 
D. n = 
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Solve the equation.6 - 9x = 5x - 8x - 12
A. {3}
B. 
C. 
D. 
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Find the inverse, if it exists, of the given matrix.A = 
A. 
B. 
C. 
D. 
Mathematics