Question

is 1 + root 5 - 4 + root 5 rational or irrational number​

Answer 1

Answer:

2. $1 + \sqrt{5 } - 4 + \sqrt{5 }$
3. $1 - 4 + \sqrt{5 } + \sqrt{5 }$
4. $- 3 + 2 \sqrt{5}$