Question

prove that √7-√5 is a irrational no.​

Answer 1

Step-by-step explanation:

Let √7-√5 be rational no.

√7-√5=p/q

we know that both√7 and √5 are irrational.

Thus √7-√5 must be irrational.

Also we have reached a contradiction.

Thus, it is an irrational number