Question

prove that 2-√3 is irrational​

Answer 1

Answer:

Let us assume that 2-√3 i

2-√3 = a/b

-√3 = a/2b

√3 = -a/2b

but we know that √3 is irrational, so it cannot be written in a/b form

So our assumption is wrong

2-√3 is irrational

Hence proved