Is sqrt of 20 rational or irrational

Answer 1

Hey! Lets solve this shall we ?

So, we have the square root of 20 which can be simplified! Then,

√20 = √4*5 = √4*√5 = 2√5.

Since √5 is irrational, 2√5 is irrational and √20 is irrational!

I hope this helped!