prove that (root n-1)+(root n+1) can never be rational

Question

please do it if any body can

Answer 1

not true for n=0

me tried for n=1,2, 3...seem tu be tru for n=positiv integer > 0

but kant thank av how tu pruev it

spekt yu gotta thank av jenral wae tu pruev...if true for n, gotta be true for n+1

me no it true for n=1, so that wood make it true for all n>=1