91Ó°ÊÓ

Use the method of completing the square to solve each quadratic equation. $$x^{2}+6 x-3=0$$

Solve each of the quadratic equations by factoring and applying the property, \(a b=0\) if and only if \(a=0\) or \(b=0\). If necessary, return to Chapter 3 and review the factoring techniques presented there. $$25 x^{2}-30 x+9=0$$

Solve each quadratic equation using the method that seems most appropriate to you. $$12 x^{2}+23 x-9=0$$

Use the method of completing the square to solve each quadratic equation. $$x^{2}+8 x-4=0$$

Use the quadratic formula to solve each of the quadratic equations. Check your solutions by using the sum and product relationships. $$2 n^{2}-3 n+5=0$$

Solve each inequality and graph its solution set on a number line. $$\frac{x}{3 x+7} \geq 0$$

Solve each of the quadratic equations by factoring and applying the property, \(a b=0\) if and only if \(a=0\) or \(b=0\). If necessary, return to Chapter 3 and review the factoring techniques presented there. $$16 x^{2}-8 x+1=0$$

Add or subtract as indicated. $$(-4-12 i)+(-3+16 i)$$

Use the quadratic formula to solve each of the quadratic equations. Check your solutions by using the sum and product relationships. $$x^{2}-18 x+80=0$$

Solve each of the quadratic equations by factoring and applying the property, \(a b=0\) if and only if \(a=0\) or \(b=0\). If necessary, return to Chapter 3 and review the factoring techniques presented there. $$6 x^{2}-5 x-21=0$$