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Common Core (The Complex Number System)

Common Core for Mathematics

**Solve quadratic equations with real coefficients using the quadratic formula - N-CN.7**

In this lesson, you will learn to solve any quadratic equation with real coefficients and to express the solutions in the form a ± bi by using the quadratic formula.

Solving Quadratic Equations with Complex Solutions

This tutorial revisits solving quadratic equations using square roots, completing the square, and the quadratic formula. Problems which previously had no solution can now be solved with the inclusion of the complex number system. Several problems are demonstrated.

Solving Quadratic Equations using the Quadratic Formula, Complex Solutions

In this example, we have complex solutions.
Quadratic Formula - Complex Solutions

This video provides an example of how to solve a quadratic equation with complex solutions using the quadratic formula. Solving a quadratic equation with complex solutions

How to use the Quadratic Formula to solve a quadratic equation with complex solutions. Quadratic Formula-Imaginary Roots

In this video, I use the quadratic formula to solve a quadratic with complex imaginary roots.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

Common Core (The Complex Number System)

Common Core for Mathematics

Examples, solutions, videos, and lessons to help High School students learn how to solve quadratic equations with real coefficients that have complex solutions.

Common Core: HSN-CN.C.7In this lesson, you will learn to solve any quadratic equation with real coefficients and to express the solutions in the form a ± bi by using the quadratic formula.

Solving Quadratic Equations with Complex Solutions

This tutorial revisits solving quadratic equations using square roots, completing the square, and the quadratic formula. Problems which previously had no solution can now be solved with the inclusion of the complex number system. Several problems are demonstrated.

In this example, we have complex solutions.

This video provides an example of how to solve a quadratic equation with complex solutions using the quadratic formula. Solving a quadratic equation with complex solutions

How to use the Quadratic Formula to solve a quadratic equation with complex solutions. Quadratic Formula-Imaginary Roots

In this video, I use the quadratic formula to solve a quadratic with complex imaginary roots.

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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