Question

that
prove$9 + \sqrt{5}$
is an irrational number​

Answer 1

Answer:

let us assume 9+√5 is rational number

so 9+√5=p/q( any rational no is written in form of p/q)

=> √5=p/q-9

√5=p-9q/9

p-9q/9 is rational no

but √5 is irrational no

therefore our assumption is wrong

so 9+√5 is irrational no...