142k views
2 votes
-2√7 rational or irrational?

2 Answers

5 votes

The sqrt(7) part makes it irrational, so the answer is irrational.

User Raghav Sharma
by
6.7k points
1 vote

Answer


-2\sqrt 7
\text {is an irrational number}


Explanation


-2\sqrt 7 is an irrational number, an irrational number is a number that contains repeating decimals or that cannot be written as a simple fraction.

User Snug
by
6.3k points