Factor the trinomial completely.2x2 - 12x + 16

A. (x - 2)(2x - 8)
B. (2x - 4)(x - 4)
C. 2(x - 8)(x + 1)
D. 2(x - 2)(x - 4)


Answer: D

Mathematics

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A. Domain: (-?, 0) ? (0, ?); range: (-?, 0) B. Domain and range: all real numbers C. Domain and range: (-?, 0) ? (0, ?) D. Domain: (0, ?); range: (-?, 0)

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Decide whether the expression is or is not an identity.sin (A + B) + sin (A - B) = 2 sin A cos B

A. Identity B. Not an identity

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Find the specified domain and express it in interval notation.For f(x) = 2x - 5 and g(x) = , what is the domain of (x)?

A. [0, ?) B. (-8, ?) C. (-8, 8) D. [8, ?)

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