Question

Prove that 5-3/7√3is irrational number.​

Answer 1

$\frac{5 - 3}{7 \sqrt{3} } = \frac{2}{7 \sqrt{3} } = \frac{2 \sqrt{3} }{7 \times 3} = \frac{2 \sqrt{3} }{21} = \frac{2 \times 1.71}{21} = \frac{3.42}{21 } = 0.16$

it's irrational