Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = 4
B. x = 2
C. x = 
D. x = 2, x = -2
Answer: D
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Factor the trinomials that are perfect-square trinomials. If it is not a perfect square, respond "not a perfect square."m2 + 26m + 169
A. (m + 13)2 B. not a perfect square C. (m - 13)2 D. (m + 13)(m - 13)
Use transformations to graph the function.y = cos x + 4
A. 
B. 
C. 
D. 
Perform the indicated operation.8 ? 92 - 6(5 + 8) - (-5)
A. 11,556 B. -565 C. -11,556 D. 575
Use the simplex method to solve the linear programming problem.Maximizez = 7x1 + 2x2 + x3subject to:x1 + 5x2 + 7x3 ? 8 x1 + 4x2 + 11x3 ? 9withx1 ? 0, x2 ? 0, x3 ? 0
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