Simplify.

A.  
B.
C.  
D.  

Answer: C

Mathematics

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A. 6.26 B. -1 C. -6.26 D. 0

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Give the domain, range, or period, as requested.Domain of y = cot x

A. x ? ?n
B. x ?  + ?n
C. x = ?n
D. -? < x < ?

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Find all valid real roots for the equation.5x8 + 13x4 = 28

A. x = ±, x = 
B. no real roots
C. x = 
D. x = ±

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Find the degree of the polynomial.-9x + 2x7 - 3x6 - 6

A. degree 6 B. degree 4 C. degree 7 D. degree 2

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