Solve. Express any nonreal complex numbers with i notation.5x4 = 38x2 + 63
A. x = ± 
B. x = ± 
, x = ± 3
C. x =± 
, ± 3
D. x = ± 3
Answer: B
Mathematics
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Use transformations to graph the function.y = -2 cos x
A. 
B. 
C. 
D. 
Mathematics
Simplify. Assume that all variables represent positive real numbers.6
- 5x
A. Cannot be simplified
B. 2x
C. x
D. (6 - 5x)
Mathematics
Simplify. Assume all variables and radicands represent non-negative real numbers.
A. 13y B. 169y C. 13y2 D. 169y2
Mathematics
Use linear programming to solve the matrix game with the given payoff matrix.A = 
A. 
= 
, 
= 
, value = 
B. 
= 
, 
= 
, value = 
C. 
= 
, 
= 
, value = 
D. 
= 
, 
= 
, value = 
Mathematics