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# Complex numbers

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Intro to the imaginary numbersIntro to the imaginary numbersPowers of the imaginary unitPowers of the imaginary unitSimplifying roots of negative numbersi as the principal root of -1

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Powers of the imaginary unitGet 3 of 4 questions to level up!

Simplify roots of negative numbersGet 3 of 4 questions to level up!

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Intro to complex numbersIntro to complex numbersClassifying complex numbers

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Parts of complex numbersGet 3 of 4 questions to level up!

Classify complex numbersGet 3 of 4 questions to level up!

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Plotting numbers on the complex planeThe complex plane

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Plot numbers on the complex planeGet 3 of 4 questions to level up!

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Adding complex numbersSubtracting complex numbers

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Add & subtract complex numbersGet 3 of 4 questions to level up!

Graphically add & subtract complex numbers Get 3 of 4 questions to level up!

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Distance & midpoint of complex numbers

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Distance of complex numbersGet 3 of 4 questions to level up!

Midpoint of complex numbersGet 3 of 4 questions to level up!

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Multiplying complex numbersMultiplying complex numbersComplex number operations review

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Multiply complex numbers (basic)Get 3 of 4 questions to level up!

Multiply complex numbersGet 3 of 4 questions to level up!

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Intro to complex number conjugatesComplex number conjugatesDividing complex numbersDividing complex numbers review

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Complex number conjugatesGet 3 of 4 questions to level up!

Divide complex numbersGet 3 of 4 questions to level up!

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Complex numbers & sum of squares factorizationFactoring sum of squares

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Factor polynomials: complex numbersGet 3 of 4 questions to level up!

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Absolute value of complex numbersAbsolute value & angle of complex numbersComplex number absolute value & angle review

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Absolute value of complex numbersGet 3 of 4 questions to level up!

Angle of complex numbersGet 3 of 4 questions to level up!

Complex numbers from absolute value & angleGet 3 of 4 questions to level up!

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Polar & rectangular forms of complex numbersComplex number forms review

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Polar & rectangular forms of complex numbersGet 3 of 4 questions to level up!

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Dividing complex numbers: polar & exponential formVisualizing complex number multiplicationPowers of complex numbersComplex number equations: x³=1Visualizing complex number powersComplex number polar form review

Practice

Multiply & divide complex numbers in polar formGet 3 of 4 questions to level up!

Powers of complex numbersGet 3 of 4 questions to level up!