Question

prove that 2√3-7 is an irrational number given that √3 is irrational ​

Answer 1

Answer:

-4.446

Step-by-step explanation:

2√3-7

2*1.723-7

3.446-7

-4.446 is a irrational number

Hence, proved

Answer 2

Answer:

I Hope your answer be clear

Step-by-step explanation:

Its very simple

let 2-√3-7 be rational

so 2-√3-7 be in the form of a/ b

on further calculation we get

RHS is rational but

Lhs √3 is irrational

so our assumption is wrong that 2-√3-7 is rational

Therefore it is irrational