Question

Prove that root 9 plus root 6 is irrational

Answer 1

$\sqrt{9 } + \sqrt{6} \\ = 3 + \sqrt{6}$
it is not irrational. (prove)

Answer 2

√9+√6/1
=(√9+√6)(√9-√6)/1(√9+√6)
=(√9^2)-(√6^2)/√9+√6
=9-6/√9+√6
=3/√9+√6
therefore it is an irrational number