This math topic involves simplifying radical expressions which appear as ratios involving sums of square roots in both the numerator and the denominator. The problems require finding common factors and practicing the manipulation of surds to simplify the expressions into fractional forms. Each question includes multiple-choice answers, enhancing students' ability to solve and choose among potential simplifications of radical expressions involving terms like the square roots of numbers such as 8, 18, 20, 45, 50, and 98. This forms part of a broader unit focused on simplifying radicals.