Evaluate or simplify the given expression.cos(2 cos-1 x)
A. 2x2 + 1
B. 2x2 - 1
C. 1
D. -1
Answer: B
Mathematics
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Match the given equation with one of the graphs.(y + 2)2 = 4(x + 4)
A. 
B. 
C. 
D. 
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The 5th term of an arithmetic sequence is 8, and the first term is -8. Find the common difference.
Fill in the blank(s) with the appropriate word(s).
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Multiply:
Mathematics
Rationalize the denominator. Assume all variables represent positive real numbers.
A. 22
B. 
C. 1
D. 22
Mathematics