Solve.x2 + y2 = 145xy = 12
A. (12, 1), (1, 12), (-12, -1), (-1, -12)
B. (1, 1), (1, 12), (-1, -1), (-1, -12)
C. (24, 1), (1, 12), (-24, -1), (-1, -12)
D. (12, 1), (2, 12), (-12, -1), (-2, -12)
Answer: A
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Solve the system by using the inverse of the coefficient matrix.2x + 8y + 6z = 204x + 2y - 2z = -23x - y + z = 11
A. {(-1, 2, 1)} B. {(2, -1, 4)} C. ? D. {(2, 1, 6)}
Find the following using a calculator. Round to four decimal places.log 82
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Simplify. (Assume all variables are nonzero.)
2
A. 2
B. 
C. 
D. 