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Show that x is rational, if x2 = 179 - Mathematics

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Question

Show that x is rational, if x2 = `1 7/9`

Numerical
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Solution

x2 = `1 7/9`

x2 = `16/9`

x = `sqrt(16/9)`

x = `4/3`

It is a Rational.

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Chapter 1: Rational and Irrational Numbers - Exercise 1 (D) [Page 23]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 1 Rational and Irrational Numbers
Exercise 1 (D) | Q 12. (iii) | Page 23
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