Determine whether the statement is true or false.|-2 - (-7)| = |-2| - |-7|
A. True
B. False
Answer: B
Mathematics
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Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 
Mathematics
Factor completely.x3 + x2 - 81x - 81
A. (x + 1)(x2 - 81) B. (x + 1)(x + 81)(x - 81) C. (x + 1)(x + 9)(x - 9) D. (x - 1)(x2 + 81)
Mathematics
Solve the equation.
?
?
A. 
B. ?
C. ?
D. ?
E. none of these
Mathematics
Determine the real solutions to the system of nonlinear equations.y = x2 - 6x + 9x + y = 3
A. (-2, 5), (-3, 6) B. (3, 0) C. (2, 1), (3, 0) D. (2, 5), (3, 0)
Mathematics