A triangle has side lengths of 4 meters and 6 meters. Another triangle has side lengths of 6 meters and x.
These two figures are the image and pre-image of a dilation.
Find the value of x.

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.