Question

prove that 7 root 5 is irrational​

Answer 1

let 7 root 5 is a rational number and we can write in the form of p / q and q is not equal to zero

7 root 5 = p /q

then

root 5 = p/ q - 7

so,

as we know that p/q -7 is a rational but root 5 is a irrational number hence our aassumption is wrong due to some contradiction 7 root 5 is an irrational number .