Question

question attached below

Answer 1

prove that .\[\sqrt{2}\] is a rational no

Answer 2

Can't prove something that is false.

Answer 3

prove that .
√2
is an irrational no

Answer 4

Can you define what a rational number is?

Answer 5

A rational number is \[
\frac ab\quad \forall a,b\in\mathbb Z, b\neq 0
\]

Answer 6

We can prove it by contradiction .