Radicals Review

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What is a radical?

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A radical is an expression that includes a root, such as a square root (√) or cube root (∛).

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What does it mean for a number to be rational?

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A rational number can be expressed as a fraction of two integers, where the denominator is not zero.

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What does it mean for a number to be irrational?

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An irrational number cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating.

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What is the square root of 4?

Back

The square root of 4 is 2, which is a rational number.

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What is the cube root of 27?

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The cube root of 27 is 3, which is a rational number.

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