Question

निम्नलिखित में से कौन सी एक अपरिमेय संख्या नहीं है. 1 .5+√5
2. (2+√5)√5 3. (2+√5)(2-√5) 4. 5√5​

Answer 1

Answer:

Answer is 3 . (2+√5)(2-√5)

Step-by-step explanation:

Start By Simplfing it

= (2+√5)(2-√5)

Open Bracket you will get => 4 -2√5+2√5-5

Here cut -2√5 with 2√5

you will get 4-5 = -1

and -1 is Integers and It Is Not Irrational Number