Find the x, and y, intercepts for

f(x)= x^2-5x +5

I have the y intercept as (0,5)

the x intercept is where I am having a problem

-(-5)+or- sqrt of -5^2-4(1)(5) / 2(1)

then I calculated that into

5 + or - the sqrt of 25 +40/2

then I calculated that into

5 + or - sqrt of 45/2

That is were I get stuck, am I on the right path so far? if not please tell me where I have gone wrong?

Thanks.