Question

Which radical expression is an irrational number? A. √ 121 B. √ 65 C. √ 36 D. √ 64

Answer 1

to simplify what the other person said the answer is C

Explanation:

Answer 2

We will verify each options

option-A:

`√(121)`

we can factor it

`√(121)=√(11*11)`

`√(121)=√(11^2)`

`√(121)=11`

so, this is not irrational.........Answer

option-B:

`√(65)`

Since, it can not be factored

so, this is irrational.........................Answer

option-C:

`√(36)`

we can factor it

`√(36)=√(6*6)`

`√(36)=√(6^2)`

`√(36)=6`

so, this is not irrational.........Answer

option-D:

`√(64)`

we can factor it

`√(64)=√(8*8)`

`√(64)=√(8^2)`

`√(64)=8`

so, this is not irrational.........Answer