Find the inverse of the matrix A, if it exists.A = 
A. A-1 does not exist.
B. A-1 = 
C. A-1 = 
D. A-1 = 
Answer: D
Mathematics
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Are the sets equal?{12, 14, 16, 18, 20} = {14, 16, 18, 20}
A. Yes B. No
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Simplify
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Compute.-(-(-21))
A. 
B. 0
C. 21
D. -21
Mathematics
Use the quadratic formula to solve the quadratic equation.x2 - x = 6
A. x = -2, 3 B. x = 1, 6 C. x = -2, -3 D. x = 2, 3
Mathematics