Question

by what number should (-20) power -1 be divided to obtain (- 10 ) power-1?

Answer 1

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Answer 2

(-20)^-1. means 1/20

And the requirement is (10)^-1 = 1/10

So 1/20 must be multiplied by 2 , so it means that 1/20 divided by 2 which is 1/20/2 = 1*2/20

Hence 1/20 must be divided by 2