No. An irrational number has a whole number, followed by a decimal, which has no repeating pattern to it.
For example, Pi:
3.14159265358979...... it goes on forever, with no pattern.
unlike 5 and one-third:
5.33333333333333.... it goes on forever, but there is a pattern to it.
or
4.12121212121212
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No, it is not irrational because it is a square root of a negative number - which falls into the set of Complex numbers. Irrational numbers can not have an imaginary component.
Whole numbers are RATIONAL. That includes negative whole numbers.
Oh, dude, negative square roots are actually considered irrational numbers. I know, right? It's like, they're not rational because they can't be expressed as a simple fraction. So yeah, negative square roots are definitely in the irrational club. Cool, right?
No -6 can be expressed as a fraction (-6/1) and therefore cannot be irrational. Irrational numbers cannot be expressed as fractions.
If you have any positive irrational number, then its negative is also irrational.