Question

Rena used the steps below to evaluate the expression , when . Step 1: Substitute into the expression. Step 2: Simplify the parentheses. Step 3: Evaluate the power to a power. Step 4: Use reciprocals and find the value. In which step did Rena make the first error?

Answer 1

step 4 is the answer

Explanation:

Answer 2

Step 4: Use reciprocals and find the value

Explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.

Please have a look at the attached photo.

My answer:

The right step 4 would be:

`(2^(3) (-1)^(21) )/(2^(6) ) =(-1)/(2^(3) ) =(-1)/(8)`

but she did it in the wrong way, she she left the terms
`2^(3)` and
`-1^(21)` in the denominator while in step 3 they were also in the denominator hence in step 4 hat they should be in the numerator when raising to 1

Hope it will find you well.