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If a > b and b(b-a) > 0, which of the following must be true?

1. b<0

2. a<0

3. ab<0

 

A) 1 only

B) 2 only

C) 1 and 2 only

D) 1 and 3 only

 Jul 30, 2020
 #1
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The answer is (A).

 Jul 30, 2020

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