Question

What is `(sqrt(5)-1)^2`?

Answer 1

`(sqrt(5)-1)^2=6-2sqrt(5)`

Explanation:

`(sqrt(5)-1)^2`
`=(sqrt(5)-1)(sqrt(5)-1)`
`=sqrt(25)-sqrt(5)-sqrt(5)+1`
`=5-2sqrt(5)+1`
`=6-2sqrt(5)`