8. A rectangle has side lengths (2x + 5) meters and (2x + 6) meters. Write a linear expression in simplest form to represent the perimeter.
Find the perimeter if the value of x is 12 meters.

Where is the qeustion

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Really any number between them works. for example 144.951