How do you work out; 6 minus square root5 / 1 - square root 5

Remember difference of 2 perfect squares?

we do the same for denom, to get the √5 to 5

1-√5 times 1+√5=1-5

so what we do is

(6-√5) / (1-√5) times (1+√5) / (1+√5) =

(1+5√5) / (1-5) =

(1+5√5) / - 4=

(-1-5√5) / 4