Simplify.
A. 3x
B. -3x2
C. 3x2
D. 3
Answer: C
You might also like to view...
Solve the differential equation.y ' + y tan x = cos x, -?/2 < x < ?/2
A. y = x cos x + C cos x, -?/2 < x < ?/2 B. y = x cos x + C sin x, -?/2 < x < ?/2 C. y = x sin x + C sin x, -?/2 < x < ?/2 D. y = x sin x + C cos x, -?/2 < x < ?/2
Find the vertex, focus, and directrix of the parabola with the given equation.(y - 1)2 = 16x
A. vertex: (0, 1) focus: (-6, 1) directrix: x = -4 B. vertex: (0, 1) focus: (4, 1) directrix: x = -4 C. vertex: (0, -1) focus: (6, -1) directrix: x = -2 D. vertex: (1, 0) focus: (4, 1) directrix: x = -3
Perform the indicated operations and write the result in standard form.
+ 
A. -12i B. -12 C. 12i D. 32i
The graph of a function f is given. Use the graph to answer the question.For what values of x is f(x) < 0?
A. (-15, ?) B. (-15, 17.5) C. (-?, -15) D. [-25, -15), (17.5, 25)