Is √20 a rational or irrational number ?explain how you know

asked Dec 12, 2016 192k views

4 votes

by Sarme

7.3k points

Please log in or register to add a comment.

2 votes

√20=√4*√5=2√5
√5-is a irrational number
===>2√5-is a irrational number =>√20 is a irrational number. :D
Have a nice day!!~~~ ^-^

Pete Johnson answered Dec 13, 2016

7.4k points

5 votes

The square root of 20 is irrational.
42 is 16, less than 20 and 52 is 25, more than 20.

Tony Ennis answered Dec 18, 2016

8.6k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

8.5m questions

11.2m answers