Question

prove that 9 root 7 is irrational number.

Answer 1

φµεรтเσɳร--➡

prove that 9 root 7 is irrational number.

αηsωєя ➡

Here 7 divides b² so for 7 divides b. Here we find 7 is common which divide both a and b but this is contradiction because a and b are co prime they don't have common factor other than 1. So for our assumption is wrong. Hence √7 is irrational.

Answer 2

Step-by-step explanation:

irrational no.is one whose perfect square could not be found

so9✓7 is an irrational no.