Complete the square to re-write the quadratic function in vertex form: y=x^2-x-4

b=-1
b/2=-0.5x-0.5
=0.25
y=x^2-x+0.25 -0.25-4
y=(x-0.5)^2-0.25-4
y=(x-0.5)^2-4.25
y=(x+1)^2+4

y=(x+1)^2+4