Question

Show that 7√3-3 is an irrational number.
answer should be according to class 10​

Answer 1

Answer:

$7 \sqrt{3} - 3 \\ 7 \times \sqrt{3} - 3 \\ 7 - 3 \times \sqrt{3} \\ 5 \times \sqrt{3} \\ \sqrt{25 \times 3} \\ = \sqrt{75}$