Question

Express $4\sqrt{5$ as a pure surd

Answer 1

Given:

Express $4\sqrt{5}$ as a pure surd

Answer:

$\sqrt{} 12$

Solution:

$2 \sqrt{} 3 \\ = \sqrt{} (2 \times 2 \times 3) \\ = \sqrt{} 12 \\ required \: pure \: curd \: = \: \sqrt{} 12$