CBSE BOARD X, asked by morearvind74, 9 months ago

prove that 5-root7 is a rational number.

Answers

Answered by anchalchugh1619

2

Answer:

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Explanation:

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Answered by Anonymous

30

Let 5-√7 be a rational no..

5-√7 = a/b

5-a/b = √7

5b-a/b = √7

We know that a rational no can not be equal to irrational no. Hence, 5-√7 is irrational no

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