Question

prove that root 5 irrational hindi​

Answer 1

Answer:

Step-by-step explanation:

√5=2.2360

So by these se know that it is irrational.

Answer 2

Answer:

I can't solve it in hindi but I can solve it in eng

let √5 is rational no.

√5=a/b

by squaring both sides

(√5)^2=a^2/b^2

b^2=a^2/5 (:5divides a)

let a be 5c

5/b^2=(5c)^2

1/=5c^2/b^2. (:5dividrs b)

but 5 can't be a factor of both a and b other than 1.

so, this is ours contradiction that 5 is a factor of both a and b

hence √5 is an irrational no.