Question

prove 3 + 2 root 5 is irrational​

Answer 1

Step-by-step explanation:

Let assume that it is a rational number.

a and b

3+2√5=a/b

3+a/b=2√5

2√5= 3b+a/a

™3+a/b

so from these we can say that 2√5 is irrational number.