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2
(x + y) = 27
=
$$frac{1}{44} sqrt{- 3 sqrt{213} + 49} left(3 sqrt{426} + 49 sqrt{2}right)$$
=
6.81115109794150
$$y_{1} = – sqrt{- frac{3 sqrt{213}}{2} + frac{49}{2}}$$
=
$$- frac{1}{2} sqrt{- 6 sqrt{213} + 98}$$
=
-1.61499867523486
=
$$- frac{1}{44} sqrt{- 3 sqrt{213} + 49} left(3 sqrt{426} + 49 sqrt{2}right)$$
=
-6.81115109794150
$$y_{2} = sqrt{- frac{3 sqrt{213}}{2} + frac{49}{2}}$$
=
$$frac{1}{2} sqrt{- 6 sqrt{213} + 98}$$
=
1.61499867523486
=
$$frac{1}{44} sqrt{3 sqrt{213} + 49} left(- 3 sqrt{426} + 49 sqrt{2}right)$$
=
1.61499867523486
$$y_{3} = – sqrt{frac{3 sqrt{213}}{2} + frac{49}{2}}$$
=
$$- frac{1}{2} sqrt{6 sqrt{213} + 98}$$
=
-6.81115109794150
=
$$frac{1}{44} left(- 49 sqrt{2} + 3 sqrt{426}right) sqrt{3 sqrt{213} + 49}$$
=
-1.61499867523486
$$y_{4} = sqrt{frac{3 sqrt{213}}{2} + frac{49}{2}}$$
=
$$frac{1}{2} sqrt{6 sqrt{213} + 98}$$
=
6.81115109794150
x1 = -1.614998675234863
y1 = 6.811151097941495
x2 = -6.811151097941495
y2 = 1.614998675234863