Definition:Surd/Pure

Definition

A pure surd is a surd containing irrational terms only.

Examples

$\sqrt 7$ is a pure surd.

$6 + \sqrt 5$ is a mixed surd.

$\sqrt 3 + 2 \sqrt {11}$ is a pure surd.

Also see

• Definition:Mixed Surd

• Results about surds can be found here.

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): pure surd
• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): surd
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): pure surd
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): surd