Question

the difference of 2 irrational numbers may or may not be irrational.explain.

Answer 1

see ill explain it to you with examples
$\sqrt{2}$ is an irrational number
again take the same irrational number now subtract one from other you get 0 right?
now take root 3 and root 2 you get an irrational number and that is what given in the question hope you understood

Answer 2

WHEN WE ADD ROOT 2 + ROOT 3 IT WILL BE A IRRATIONAL NO.
BUT WHEN WE ADD ROOT 4 AND ROOT 36 WE GET 8 AS THE ANSWER WHICH IS NOT IRRATIONAL NO.