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CBSE Class 9 Answered

Let 'a'be a rational no. & 'b' be an irrational no. is 'ab' necessarily an irrational ? Justify with an example.
Asked by Harshita Harshita | 26 Sep, 2010, 01:13: PM
answered-by-expert Expert Answer
Dear Student
Product of rational and irrational  is always irrational only
For instance say  be irrational  and 2 be a rational number so
product is   which is irrational
Regards
Team Topperlearning
Answered by | 27 Sep, 2010, 09:30: AM

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