Question

which of the following is not irrational ​

Answer 1

Answer:

1-√5

Step-by-step explanation:

the irrational numbers in the following might be 1-√5

Answer 2

(1+√5) (1-√5) is not irrrational no. cause after we use the identity (a+b)(a-b) = a^2-b^2

=> (1)^2 - (√5)^2 = 1-5 = -4 & -4 is not irrational no.