x-28/(x-1)=4
x*(x-1)-28=4*(x-1)
x^2-x-28=4x-4
x^2-5x-24=0
D=b^2-4ac=121
x1,2=(-b±sqrt(D))/2a
x1=(5-11)/2=-3
x2=(5+11)/2=8
x-28/(x-1)=4
x*(x-1)-28=4*(x-1)
x^2-x-28=4x-4
x^2-5x-24=0
D=b^2-4ac=121
x1,2=(-b±sqrt(D))/2a
x1=(5-11)/2=-3
x2=(5+11)/2=8