Question

Q4 Prove that 6+5 is irrational​

Answer 1

Step-by-step explanation:

prove 6+√5is a irrational nos

Let us assume, to the contrary, that 6+√5 is irrational.

So we can find two integers numbers p and q(≠0), in the following way,

6+√5 = p/q [where p and q are co-prime]

Rearranging,

√5 = p/q - √6

√5 = [p - √6q]/q

But [p - √6q]/q is a rational nos

By fact √5 is a rational nos

our assumption is wrong

6+√5 is irrational nos