Use a double-angle identity to find the exact value of the expression.1 - 2 sin2 
A. - 
B. 
C. - 
D. - 
Answer: A
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An expression that occurs in calculus is given. Write the expression as a single quotient in which only positive exponents and/or radicals appear.8x3/2(x3 + x2) - 10x5/2 - 10x3/2
A. 8x3/2(x3 - 1) + 8x3 - 2x3/2(x - 1) B. 2x3/2(x + 1)(4x2 - 5) C. x3/2(x - 1)[8(x2 - 1) - 2] + 8x3 D. 8x3/2(x + 1)(4x2 - 5)
Convert as indicated. Express the answer in decimal form when needed.6 inches per minute to inches per second
A. 360 in./sec B. 72 in./sec C. 180 in./sec D. 144 in./sec
Solve the equation exactly in the complex number system.x3 + 125 = 0
A. x = 5, x = 
± 
B. x = - 
, x = 
± 
C. x = -5, x = 
± 
D. x = -5, x = 
+ 
, x = - 
- 
Solve the nonlinear system. -2x + y = 5x2 + y2 - 25 = 0
A. (0, -5), (0, 5), (-4, -3) B. (0, 5), (-4, -3) C. (5, 0), (-3, -4) D. (0, 5), (-4, 3)