Question

Simplify this radical.
$\sqrt{84} \\\\1; 2\sqrt{21} \\2; 2\sqrt{42} \\3; 4\sqrt{21} \\or 4; 4\sqrt{42}$

Answer 1

The radical is 2√21.

What is radical?

The √ symbol that is used to denote square root or nth roots.

Given :

√84

= √2*2*21

=2√21

Hence, the radical is 2√21.

Learn more about radical here:

https://brainly.com/question/14923091

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