Perform the matrix operation. 
+ 
=
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve.x3 + 2x2 - 4x ? 8
A. [2, ?) B. [-2, 2] C. (-?, 2] D. (-?, -2] ? [2, ?)
Mathematics
Simplify the expression. Write the answer with only positive exponents. Assume that all variables represent nonzero real numbers.105(10-2)
A. 
B. 
C. 103
D. 104
Mathematics
Solve the system of equations.-x + y +3z = 43x - y +z = -8
A. (3z - 4, z + 8, z) B. (-2z - 1, -5z + 3, z) C. No solution D. (-2z - 2, -5z + 2, z)
Mathematics
?Solve for ?y in two ways.
?
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics