The formula to find the axis of symmetry is -b/2a
Meaning to say,
x = -(-3)/2(1)
= 3/2
= 1.5
f(x)=x^2-3x+2
=1.5^2-3(1.5)+2
=2.25-4.5+2
= -0.25
∴ (1.5, -0.25)