What is the meaning of surds

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Solution

Surd:

A number that can't be simplified to remove a square root (or cube root etc).

Examples:

• √2 (square root of 2) can't be simplified further so it is a surd

• √4 (square root of 4) CAN be simplified to 2, so it is NOT a surd

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\sqrt[3]{2}, \sqrt[6]{3}, \sqrt[9]{4} ?

\sqrt{8}, \sqrt{12}, \sqrt{20}, \sqrt{54}

\sqrt{50}, \sqrt[3]{54}, \sqrt[4]{32}

\sqrt{8}, \sqrt{18}, \sqrt{32}, \sqrt{50}

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