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प्रश्न
Classify the following numbers as rational or irrational:
`2-sqrt5`
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उत्तर
`2-sqrt5`
2 is a rational number, and `sqrt5` is an irrational number.
Therefore, `2-sqrt5` is an irrational number.
∴ The difference of a rational number and an irrational number is irrational.
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संबंधित प्रश्न
Rationalise the denominator of the following
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`(sqrt5-sqrt2)(sqrt5+sqrt2)`
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`2/(3sqrt(3)`
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`1/(sqrt(3) + sqrt(2))`
