### Home > PC3 > Chapter 1 > Lesson 1.2.1 > Problem 1-72

1-72.

In this course, you will need to rationalize the denominator (make the denominator a rational number) of fractions with radicals in the denominator. Before calculators, there was good reason to rationalize denominators—all calculations had to be done by hand. Consider dividing

This is the same as the example, but with a numerator of

.