Simplify the expression so there’s only one positive power for the base, -5.

Given:

The expression is

To find:

The simplified form of the given expression so there is only one positive power for the baser -5.

Solution:

We have,

Using the properties of exponents, the given expression can be written as

Here, the base is -5 and the exponent is 5.

Therefore, the correct option is C.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,