ऐसी संख्या जिसका वर्ग ऋणात्मक हो , उसे अवास्तविक संख्या कहते है । जैसे :- √-4 , √-5 , (3 + √2 )
A number whose square is negative is called an irrational number.
For Example :- √-4 , √-5 , (3 + √2 )
