Perform the indicated operations and simplify. Assume that all variables represent positive real numbers.-2 - 2

A. -30 
B. -2
C. 2
D. 30 

Answer: A

Mathematics

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A.   or - 
B. 9 or - 9
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D. 81 or - 81

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Provide an appropriate response.Consider the selection of officers for a club. Is this a combination, a permutation, or neither?

A. Combination B. Neither C. Permutation

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Subtract.54,135

A. 16,282 B. 16,276 C. 23,282 D. 16,216

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Subtract.11b5a3 - a4b2 + 14ab3 - 3 from 5a3b5 - 5a4b2 + 7ab3 - 6ab + 14

A. -3a3b5 - 7a4b2 - 21ab3 - 6ab + 11 B. -6a3b5 - 4a4b2 + 7ab3 + 6ab + 15 C. -6a3b5 - 4a4b2 - 7ab3 - 6ab + 17 D. 6a3b5 - 4a4b2 - 21ab3 - 5ab + 11

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