Which expression is equivalent to –8?

–2–3

(-1/2)^-3

(1/2)^-3

2–3

second option. (NOTE: If the first option is , then it would be an equivalent expression too, because:  )

Step-by-step explanation:

To solve this problem you must keep on mind the following exponents rule:

Therfore, you have that:

This means that the number -2 must be multiply by itself three times. Therefore, you obtain the folllowing result:

If the first option is , then it would be an equivalent expression too, because:

.

Step-by-step explanation:

Given :  –8.

To find : Which expression is equivalent.

Solution : We have given  –8.

By the radical rule : .

Then

.

.

Therefore,  .

the answer is b

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