Find the real solutions of the equation by factoring.x3 + 2x2 - x - 2 = 0
A. {4}
B. {-2, 2}
C. {1, -2, 2}
D. {-1, 1, -2}
Answer: D
Mathematics
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A. 64x2 + 121y2 B. 8x2 + 121y2 C. 8x2 - 176xy + 121y2 D. 64x2 - 176xy + 121y2
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Use the horizontal line test to determine whether the function is one-to-one.
A. Yes B. No
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Find the domain of the function.f(x) = 
A. (-?, 3) ? (3, ?) B. (-?, -7) ? (-7, ?) C. (-?, ?) D. (-?, -7) ? (-7, 3) ? (3, ?)
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Determine where the function is increasing and where it is decreasing.f(x) = x2 - 4x
A. increasing on (2, ?) decreasing on (-?, 2) B. increasing on (-?, -2) decreasing on (-2, ?) C. increasing on (-2, ?) decreasing on (-?, -2) D. increasing on (-?, 2) decreasing on (2, ?)
Mathematics