Simplify the expression.
(b) 
Mathematics
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Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = 4, x = 0 B. x = 4, x = -4 C. x = -4 D. x = 0
Mathematics
The pair of triangles is similar. Determine the three pairs of corresponding sides.
A. a corresponds to f b corresponds to e c corresponds to d B. a corresponds to d b corresponds to f c corresponds to e C. a corresponds to f b corresponds to d c corresponds to e D. a corresponds to d b corresponds to e c corresponds to f
Mathematics
Graph the function.y = sec (2x)
A. 
B. 
C. 
D. 
Mathematics
Find the domain of the function of two variables.f(x, y) = 
A. {(x, y)| x2 + y2 ? 7} B. {(x, y)| x2 - y2 ? 7} C. {(x, y)| x2 + y2 ? 7} D. {(x, y)|x2 - y2 ? 7}
Mathematics