Solve the equation by factoring.x2 + 14x = -45
A. -9, 5
B. -45, -1
C. 5, 9
D. -9, -5
Answer: D
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Find all the first order partial derivatives for the following function.f(x, y) = sin2 (4xy2 - y)
A. fx(x, y) = 2 sin (4xy2 - y) cos (4xy2 - y); fy(x, y) = 2 sin(4xy2 - y) cos(4xy2 - y) B. fx(x, y) = 2 sin (4xy2 - y) cos (4xy2 - y); fy(x, y) = (16x - 2) sin (4xy2 - y) cos (4xy2 - y) C. fx(x, y) = 8y2 sin (4xy2 - y) cos (4xy2 - y); fy(x, y) = 2 sin (4xy2 - y) cos (4xy2 - y) D. fx(x, y) = 8y2 sin (4xy2 - y) cos (4xy2 - y); fy(x, y) = (16xy - 2) sin (4xy2 - y) cos (4xy2 - y)
Use the formula for 
to evaluate the expression.
A. 30,240 B. 5 C. 2 D. 252
Perform the calculation. Express the answer in degree-minutes-seconds format.180° - 177°57'24''
A. 2°2'36'' B. 3°2'36'' C. 2°3'36'' D. 3°3'36''
Simplify the expression. Assume that all variables are positive when they appear.
A. -28
B. - 
C. -9
D. - 