Posted by **Sara** on Friday, October 9, 2009 at 6:53pm.

Is the product of two irrational numbers always an irrational

number?

- Math -
**Lisa**, Friday, October 9, 2009 at 7:01pm
not neccessarily

- Math -
**MathMate**, Friday, October 9, 2009 at 8:32pm
When you have a statement like "...always...", it is sometimes (not always) easier to disprove with a counter example than to prove the truth of the statement.

For example,

√2 is irrational.

√2 * √2 = 2 is rational.

## Answer this Question

## Related Questions

- Math - Are there more rational or irrational numbers? I am thinking irrational, ...
- Math - Here is the question: Is the product of two irrational numbers always an ...
- Math - What are irrational, rational, and natural numbers? A rational number is ...
- math - Keyshia said that one of the following numbers is IRRATIONAL. Which ...
- math - Keyshia said that one of the following numbers is IRRATIONAL. Which ...
- math - What is the best sequence of names to identify this set of numbers? (1 3/...
- irrational numbers?! - what are rational and irrational numbers?? i know that ...
- math- please help - What is the best sequence of names to identify this set of ...
- Math - In the question: a rational number plus an irrational number will be ____...
- please help with math - There exist irrational numbers a and b so that a^b is ...

More Related Questions