sqrt(x+y)+sqrt(x+2*y)=10 sqrt(x+y)+2*x+y=16

_______
/ x + y + 2*x + y = 16

-4

$$y_{1} = 20$$
=
$$20$$
=

20

x1 = -4.0 – 1.376499328624346e-32*i
y1 = 20.0 + 2.721587983418556e-32*i

x2 = -4.0 + 3.518214896117892e-32*i
y2 = 20.0 – 6.956151862145899e-32*i

x3 = -4.0 + 1.926684152406659e-27*i
y3 = 20.0 – 3.809403125602383e-27*i

x4 = -4.0 – 1.618768198902097e-30*i
y4 = 20.0 + 3.200597431990339e-30*i

x5 = -4.0 + 1.064528109567497e-28*i
y5 = 20.0 – 2.104764602808249e-28*i

x6 = -4.0 – 1.879267342016954e-31*i
y6 = 20.0 + 3.715651097177672e-31*i

x7 = -4.0 – 1.577383077831757e-32*i
y7 = 20.0 + 3.11877220410476e-32*i

x8 = -4.0 + 1.767187003156166e-26*i
y8 = 20.0 – 3.494054043626202e-26*i

x9 = -4.0 – 1.638918245261517e-31*i
y9 = 20.0 + 3.240437966937599e-31*i

x10 = -4.00000000000000
y10 = 20.0000000000000