Numerically Solve a system of nonlinear equations in Wolfram-Alpha - Resolver un sistema de ecuaciones no lineales en Wolfram-Alpha - Решить систему нелинейных уравнений в Wolfram-Alpha

Numerically Solve a system of nonlinear equations in Wolfram-Alpha -
Resolver Numericamente un sistema de ecuaciones no lineales en Wolfram-Alpha -
Решить систему нелинейных уравнений в Wolfram-Alpha

NSolve[{2*x+y+z=20,x^2-2*y^2+z^2=2,x^2+y^2-2*z^2=-30}, {x, y,z}]


x≈4.31099 - 1.18424×10^-16 i ∧ y≈5.22027 + 5.16153×10^-15 i ∧ z≈6.15775 - 4.92468×10^-15 i

x≈9.74445 + 1.18424×10^-15 i ∧ y≈-10.1794 + 4.49024×10^-14 i ∧ z≈10.6905 - 4.72709×10^-14 i

x≈10.2446 - 1.18424×10^-15 i ∧ y≈10.6592 - 5.37863×10^-14 i ∧ z≈-11.1483 + 5.61547×10^-14 i


https://www.wolframalpha.com/input/?i=NSolve%5B%7B2*x%2By%2Bz%3D20%2Cx%5E2-2*y%5E2%2Bz%5E2%3D2%2Cx%5E2%2By%5E2-2*z%5E2%3D-30%7D%2C+%7Bx%2C+y%2Cz%7D%5D