Simplify the expression.
A. - sin2x
B. sin x cos2x
C. - cos2x
D. sin2x
Answer: A
Mathematics
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Multiply.(-4)(-3)(10)(-3)(-1)
A. 360 B. 120 C. -360 D. 382
Mathematics
Find the product.( 2x3- x2 + 3x - 1) (2x + 2)
A. 5x4 - 2x3 + 3x2 - 4x + 2 B. 4x3 + 2x2 + 4x + 4 C. 3x4 + 6x3 + 6x2 + 6x - 4 D. 4x4 + 2x3 + 4x2 + 4x - 2
Mathematics
Solve the formula for the specified variable.S = 2?rh + 2?r2 for h
A. h = 
B. h = 2?(S - r)
C. h = S - r
D. h = 
Mathematics
Evaluate as instructed.Use f(x) = x - 3 and g(x) = x + 3 to evaluate (fg)(-1).
A. -10 B. 1 C. -2 D. -8
Mathematics