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2.4E: Complex Numbers (Exercises)
https://math.libretexts.org/Courses/Las_Positas_College/Book%3A_College_Algebra/02%3A_Equations_and_Inequalities/2.04%3A_Complex_Numbers/2.4E%3A_Complex_Numbers_(Exercises)
For the following exercises, use the quadratic equation to solve. 26. $x^{2}-5 x+9=0$ 27. $2 x^{2}+3 x+7=0$ For the following exercises, name the horizontal component and the vertical component. 2...For the following exercises, use the quadratic equation to solve. 26. $x^{2}-5 x+9=0$ 27. $2 x^{2}+3 x+7=0$ For the following exercises, name the horizontal component and the vertical component. 28. $4-3 i$ For the following exercises, perform the operations indicated. 30. $(9-i)-(4-7 i)$ 31. $(2+3 i)-(-5-8 i)$ 33. $\sqrt{-16}+4 \sqrt{-9}$ 36. $\sqrt{-4} \cdot \sqrt{-12}$ 37. $\sqrt{-2}(\sqrt{-8}-\sqrt{5})$ 38. $\frac{2}{5-3 i}$ 39. $\frac{3+7 i}{i}$
1.7E: Complex Numbers (Exercises)
https://math.libretexts.org/Workbench/1250_Draft_4/01%3A_Prerequisites/1.07%3A_Complex_Numbers/1.7E%3A_Complex_Numbers_(Exercises)
For the following exercises, use the quadratic equation to solve. 26. $x^{2}-5 x+9=0$ 27. $2 x^{2}+3 x+7=0$ For the following exercises, name the horizontal component and the vertical component. 2...For the following exercises, use the quadratic equation to solve. 26. $x^{2}-5 x+9=0$ 27. $2 x^{2}+3 x+7=0$ For the following exercises, name the horizontal component and the vertical component. 28. $4-3 i$ For the following exercises, perform the operations indicated. 30. $(9-i)-(4-7 i)$ 31. $(2+3 i)-(-5-8 i)$ 33. $\sqrt{-16}+4 \sqrt{-9}$ 36. $\sqrt{-4} \cdot \sqrt{-12}$ 37. $\sqrt{-2}(\sqrt{-8}-\sqrt{5})$ 38. $\frac{2}{5-3 i}$ 39. $\frac{3+7 i}{i}$

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