Question

prove that root 5 is an irrational number. and state how 7-root5 is irrational?​

Answer 1

Answer:

let, 7-root 5 is rational number .is equal to r, where r is a rational number,7-r=root5...so, our assumption I was wrong;7-root 5 is not a rational number. therefore 7-root5 irrational number