More Lessons for Grade 9 Math

Math Worksheets

Videos, worksheets, solutions, and activities to help Grade 9 students learn what are complex numbers.

What is a Complex Number?

Complex Numbers: what they are, how to add and multiply them. Geometrical interpretation of multiplication.

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.