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How to use Complex Number Calculator

Enter the real and imaginary parts of two complex numbers, choose an operation, and the result is shown in a+bi form.

Frequently asked questions

How are complex numbers written?

In the form a + bi, where a is the real part, b the imaginary part, and i is √(−1).

How is complex multiplication done?

(a+bi)(c+di) = (ac−bd) + (ad+bc)i, using the rule that i² = −1.

How does complex division work?

Multiply the numerator and denominator by the conjugate of the denominator to remove i from the bottom.

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