Imaginary Numbers Basics

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What is an imaginary number?

Back

An imaginary number is a number that can be written as a real number multiplied by the imaginary unit 'i', where i is defined as the square root of -1.

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Back

Front

What is the square root of a positive number?

Back

Front

What is the square root of 64?

Back

The square root of 64 is 8.

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What is the square root of 121?

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The square root of 121 is 11.

Front

What is the square root of 4?

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The square root of 4 is 2.

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What is the square root of -81?

Back

The square root of -81 is 9i.

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What is the square root of 9?

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The square root of 9 is 3.

Front

What is the imaginary unit 'i'?

Back

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