Question

Prove that 3 root 5 by 7 is irrational

Answer 1

Answer:

$\frac{3 \sqrt{5} }{7} \: is \: irrational \\ let \: x = \frac{3 \sqrt{5} }{7} be \: rational \\ 7x = 3 \sqrt{5} \: be \: rational \\ \frac{7x}{3} = \sqrt{5} be \: rational \: \\ but \: \sqrt{5} \: \:is \: irrational \\ therefore \: \: \frac{3 \sqrt{5} }{7} \: is \: irrational$

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Answer 2

Answer:

Step-by-step explanation: