Never,never
#1
If a is negative
a(1/a)=a/a becomes
Whuch yields 1 not -1
#2
a and b are negative
We know
So their product can't be negative
Answer:
never, never
Explanation:
a *( 1/a)
Rewriting
a/a *1
1
This is not equal to -1
ab
Both a and b are negative
(-) * (-) = positive
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