Appendix A - A.5 - The Quadratic Formula and Square Root Properties - Exercises - Page 555: 9

(a) $\sqrt{54} = 7.348469$ $3~\sqrt{6} = 7.348469$ (b) $\sqrt{\frac{5}{16}} = 0.55901699$ $\frac{\sqrt{5}}{4} = 0.55901699$

We can use a calculator to verify that the expressions are equivalent: (a) $\sqrt{54} = 7.348469$ $3~\sqrt{6} = 7.348469$ (b) $\sqrt{\frac{5}{16}} = 0.55901699$ $\frac{\sqrt{5}}{4} = 0.55901699$