Question

$by \: which \: number \: should -5 {}^{ - 1 \: } be \: multiplied \: so \: that \: product \: is \: equal \: to \: 2 {}^{1}$
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Answer 1

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-10 is the correct answer.

This is the best possible answer

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Answer 2

Answer:

Assumption: Let the number to be multiplied be x.

So, as per the question,

-5^(-1) × x= 2¹

=> (-1/5)¹ × x = 2

=> (-1/5) × x = 2

=> x = 2 × (-5)

=> x = -10

So, -10 should be multiplied to (-5)^(-1) to get 2¹.

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