I don't understand. Is it a multiple-choice question The following (1) and (2) are questions. Are the above parts including verification known conditions?

The following is the second revision according to the flying language of the landlord.

Because that symmetry axis x=2 is also known.

Then substitute it into the point (1, 0), and the square of 0 =1+b *1+c.

Axis of symmetry x=-b/2a==-b/2* 1=2.

The solution is y=x*x-4*x+3.

As for completeness, I don't understand it. Does it mean that given a known condition, we can solve that the axis of symmetry is x=2? Having said that, just give a point on the curve.