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Mathematics 18 Online
OpenStudy (anonymous):

If (a-5)(b+5)<0, then which of the following could be true? a) a<5 b)a =/= -5 c) b=/= -5 d) b> -5 e) a>5

OpenStudy (anonymous):

c should be the answer because if b is equal to -5 then the term will be equal to 0.

OpenStudy (anonymous):

it says "COULD be true" not "must be true"

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