Complete the identity. 
= ?
A. cos2 x
B. sin2 x
C. 1
D. -1
Answer: B
Mathematics
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Simplify the rational expression.
A. -1
B. 
C. - 
D. 1
Mathematics
Solve.8|x| + 5 = 14
A. 
B. 
C. 
D. 
Mathematics
Analyze the graph and write the equation of the function it represents in standard form f(x) = a(x - h)2 + k.
A. f(x) = -(x + 2)2 + 4 B. f(x) = (x + 2)2 - 4 C. f(x) = (x + 2)2 + 4 D. f(x) = -(x + 2)2 - 4
Mathematics
Solve the equation.
= 
+ 
A. 
B. no solution
C. 3
D. -3
Mathematics