Use half-angle identities to find the exact value of the expression.cos 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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= 1
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.log (5 + x) - log (x - 3) = log 5
A. -5
B. ?
C. 5
D. 
Mathematics
Solve the equation.3(2x + 1) = 5 - 5(2x - 3)
A. 
B. 
C. - 
D. 17
Mathematics
Use the Binomial Theorem to expand and simplify the expression.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics