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Is √20 a rational or irrational number ?explain how you know
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4 votes
Is √20 a rational or irrational number ?explain how you know

User Sarme
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2 Answers

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√20=√4*√5=2√5
√5-is a irrational number
===>2√5-is a irrational number =>√20 is a irrational number. :D
Have a nice day!!~~~ ^-^
User Pete Johnson
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5 votes
The square root of 20 is irrational.
42 is 16, less than 20 and 52 is 25, more than 20.
User Tony Ennis
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9.2k points
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