English

Show that x is rational, if x2 = 16.

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Question

Show that x is rational, if x2 = 16.

Numerical
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Solution

x2 = 16

x = `sqrt16`

x = `sqrt(4 xx 4)`

x = 4

It is 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. (i) | Page 23
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