Question

prove that 7+4√5 is an irrational number given that√5 is irrational ​

Answer 1

Answer:

let us assume 4✓5/7 as a rational number. → 4✓5/7 = a/b where a and b are Co-primes. ... Hence , a contradiction has arisen due to our wrong assumption of 4✓5/7 as rational. → 4√5/7 is Irrational