Rationalize the numerator. Assume all variables represent positive numbers.

A.
B.
C.
D.

Answer: B

Mathematics

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A.  + C
B.  + C
C.  +  + C
D.  + C

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Factor completely.u2 - 4uv - 21v2

A. (u - 3v)(u + 7v) B. (u - 3v)(u + v) C. (u - v)(u + 7v) D. (u + 3v)(u - 7v)

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Write the set by listing its elements.{x? x = 4n for some n ? N}

A. {0, 4, 8, 12, . . .} B. {4, 8, 12, . . .} C. ? D. {8, 12, 16, . . .}

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Identify the base and the exponent. Do not evaluate.-113

A. Base: -11, exponent: 3 B. Base: 3, exponent: 11 C. Base: 11, exponent: 3 D. Base: 3, exponent: -11

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