x=sqrt(398500*y*1/(1500+4072*y)) y=sqrt(587/500+69*x/500)

$$x = sqrt{frac{398500 y}{4072 y + 1500}}$$

____________
/ 587 69*x
y = / — + —-
/ 500 500

$$y = sqrt{frac{69 x}{500} + frac{587}{500}}$$

$$x_{1} = – frac{587}{69} + frac{500}{69} {Crootof} {left(254500000 y^{5} + 93750000 y^{4} – 597566000 y^{3} – 220125000 y^{2} – 123543383 y + 129213375, 2right)}^{2}$$
=
$$- frac{587}{69} + frac{500}{69} {Crootof} {left(254500000 y^{5} + 93750000 y^{4} – 597566000 y^{3} – 220125000 y^{2} – 123543383 y + 129213375, 2right)}^{2}$$
=

8.89196580472290

$$y_{1} = {Crootof} {left(254500000 y^{5} + 93750000 y^{4} – 597566000 y^{3} – 220125000 y^{2} – 123543383 y + 129213375, 2right)}$$
=
$${Crootof} {left(254500000 y^{5} + 93750000 y^{4} – 597566000 y^{3} – 220125000 y^{2} – 123543383 y + 129213375, 2right)}$$
=

1.54954550789958

x1 = 8.891965804722897 – 3.301105951062594e-33*i
y1 = 1.549545507899578 – 1.63746149982495e-34*i

x2 = 8.891965804722897 – 6.488727898184065e-33*i
y2 = 1.549545507899578 – 3.225648205008848e-34*i

x3 = 8.891965804722897 – 2.141889997969541e-33*i
y3 = 1.549545507899578 – 1.060208531576687e-34*i

x4 = 8.891965804722897
y4 = 1.549545507899578

x5 = 8.891965804722897 – 7.759436769108574e-33*i
y5 = 1.549545507899578 – 3.859134379315294e-34*i

x6 = 8.891965804722897 – 2.240052918056365e-32*i
y6 = 1.549545507899578 – 1.11688099972736e-33*i

x7 = 8.891965804722897 + 8.706879829145516e-33*i
y7 = 1.549545507899578 + 4.338130333257848e-34*i