Appendix A - A.5 - The Quadratic Formula and Square Root Properties - Exercises - Page 555: 32

$x = -\sqrt{\frac{b}{a}}~~$ or $~~x = \sqrt{\frac{b}{a}}$

We can write the general form of the square roots property: If $x^2 = a$ where $a \geq 0$, then $x = \pm \sqrt{a}$ We can solve the incomplete quadratic equation: $ax^2 -b = 0$ $ax^2 = b$ $x^2 = \frac{b}{a}$ $x = \pm \sqrt{\frac{b}{a}}$ $x = -\sqrt{\frac{b}{a}}~~$ or $~~x = \sqrt{\frac{b}{a}}$