Chapter 8 - Section 8.1 - The Square Root Property and Completing the Square - Concept and Vocabulary Check - Page 592: 3

$x = ± \frac {\sqrt22}{2}$

$x^2 = \frac{11}{2}$ Using the Square Root Property $u^2 = d$, then $u = \sqrt d$ or $u = - \sqrt d$. Thus, $x = ±\sqrt \frac{11}{2}$ Rationalizing denominators: $x = ±\sqrt \frac{11}{2}$ $⋅$ $\sqrt \frac{2}{2}$ $x = ± \frac {\sqrt22}{2}$