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Express the following integers as a product of its prime factors: 1/sqrt(5)

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Question

Express the following integers as a product of its prime factors:

`1/sqrt(5)`

Sum
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Solution

Given: `1/sqrt(5)`

Step-wise calculation:

1. Write `sqrt(5)` as a power: `sqrt(5) = 5^(1/2)`.

2. Take the reciprocal: `1/sqrt(5)`

= `1/5^(1/2)` 

= `5^((-1)/2)`

3. Multiply numerator and denominator by `sqrt(5)`:

`1/sqrt(5)` = `sqrt(5)/5`

= `5^(1/2)/5`

= `5^(1/2)/5^(1)`

= `5^((-1)/2)`

As a product of prime factors in exponent form: `1/sqrt(5) = 5^((-1)/2)`.

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Notes

`sqrt(5)` is irrational and 5 is a prime.

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Chapter 1: Real Numbers - EXERCISE 1.3 [Page 1.25]

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R.D. Sharma Mathematics [English] Class 10
Chapter 1 Real Numbers
EXERCISE 1.3 | Q 1. (v) | Page 1.25
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