Answer:
Just take the reciprocal of the divisor. Taking the reciprocal of a fraction just means swapping the numerator and the denominator (put the top on the bottom, and the bottom on the top).
Step-by-step explanation:
Traditionally, a radical or irrational number cannot be left in the denominator (the bottom) of a fraction. When a radical does appear in the denominator, you need to multiply the fraction by a term or set of terms that can remove that radical expression. While the use of calculators make rationalizing fractions a bit dated, this technique may still be tested in class.