Solve the polynomial equation.-2x5 + 2x4 + 6x3- 6x2 + 8x - 8 = 0
A. x = -2, -2, 1
B. x = 2, -2, 1, ±i
C. x = 2, 2, -1, i
D. x = -2, 2, -1, ±i
Answer: B
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Solve the equation. - 5 = 1
A. 42 B. 28 C. -42 D. -28
Express the set of real numbers graphed on the number line using an inequality.
A. x ? -6 B. x ? -6 C. x < -6 D. x > -6
An object of mass m (in grams) attached to a coiled spring with damping factor b (in grams per second) is pulled down a distance a (in centimeters) from its rest position and then released. Assume that the positive direction of the motion is up and the period is T (in seconds) under simple harmonic motion. Develop a model that relates the distance d of the object from its rest position after t seconds.m = 30, a = 10, b = 0.55, T = 6
A. d = -10e-0.55t/60 cos
B. d = -10e-0.55t/60 cos
C. d = 10e0.55t/60 cos
D. d = 10e-0.55t/60 cos
Find the vertices and locate the foci for the hyperbola whose equation is given.64y2 - 4x2 = 256
A. vertices: (-2, 0), (2, 0)
foci: (-2, 0), (2
, 0)
B. vertices: (-8, 0), (8, 0)
foci: (-2, 0), (2
, 0)
C. vertices: (0, -2), (0, 2)
foci: (0, -2), (0, 2
)
D. vertices: (0, -8), (0, 8)
foci: (0, -2), (0, 2
)