Rationalize the denominator to simplify a radical expression

The video tutorial explains how to simplify a rational radical expression with a binomial in the denominator. It covers the use of the conjugate to eliminate radicals, the box method for organizing multiplication, and the simplification of both the numerator and denominator. The tutorial concludes with dividing by a common divisor to achieve the final simplified expression.

What steps are taken to combine like terms in the numerator after applying the box method?

After simplifying the expression, what common divisor is identified, and how does it affect the final result?