Question

show that negative of an irrational number is irrational​

Answer 1

let negative of an irrational be rational number 

let P be an irrational number therefore by the assumption -p is  a rational number 

since negative of a rational number is rational.-(-P)= P

is  a rational number   but we assumed P as an irrational number ... so our assumption is wrong  so negative of an irrational number is irrational ......

Answer 2

Hope it saves you...........