x-y=1
x-4y^2=1
y=x-1x-4y^2=1
x-4*(x-1)^2=1
9x-4x^2-5=0
D=9^2-4*(-4)*(-5)=81-80=1
x1=(1-9)/(2*(-4))=1x2=(-1-9)/(2*(-4))=1.25x-y=1
1-y=1
y1=0
1.25-y=1
y2=0.25
x-y=1
x-4y^2=1
x-y=1
y=x-1
x-4y^2=1
x-4*(x-1)^2=1
9x-4x^2-5=0
D=9^2-4*(-4)*(-5)=81-80=1
x1=(1-9)/(2*(-4))=1
x2=(-1-9)/(2*(-4))=1.25
x-y=1
1-y=1
y1=0
1.25-y=1
y2=0.25