Simplify the given expression. Expansion of any term is not necessary; proper recognition of the form of the expression leads to the proper result.2 - 4 cos2 2x
A. 2 cos 4x
B. -2 cos 4x
C. -2 cos 2x
D. 4 cos 4x
Answer: B
Mathematics
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A. Webster B. Hamilton C. Adams D. Jefferson
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for u = f(x); x = g(p, q, r)
A. 
= 
B. 
= 
C. 
= 
+ 
+ 
D. 
= 
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A. 
B. 
C. 
D. 
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Solve the equation.
?
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If an answer is not exact, give the answer to four decimal places.
Fill in the blank(s) with the appropriate word(s).
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