Question

Which is the value of this expression when j = negative 2 and k = negative 1?

(StartFraction j k Superscript negative 2 Baseline Over j Superscript negative 1 Baseline k Superscript negative 3 Baseline EndFraction) cubed
–64
Negative one-half
One-half
64

Answer 1

The answer is A.

Explanation:

I did the test, and I also solved it. Its the only logical answer.

Answer 2

Option A.

Explanation:

It is given that

`j=-2, k=-1`

The given expression is

`\left((jk^(-2))/(j^(-1)k^(-3))\right)^3`

Substitute the given values in the above expression.

`\left(((-2)(-1)^(-2))/((-2)^(-1)(-1)^(-3))\right)^3`

`\Rightarrow \left(((-2)(1))/((1)/(-2)(-1))\right)^3`

`\Rightarrow \left((-2)/((1)/(2))\right)^3`

`\Rightarrow \left(-4\right)^3`

`\Rightarrow -64`

Therefore, the correct option is A.