Решите систему уравнений x^2+y^2=10 x^2-y^2=-8

Question

Решите систему уравнений x^2+y^2=10
x^2-y^2=-8

Answer 1

X^2 + y^2 = 10
x^2 - y^2 = - 8
--------------------------  +
2x^2 = 2
x^2 = 1

x1 = 1
y1 = 3

x2 = 1
y2 = - 3

x3 = - 1
y3 = 3

x4 = - 1
y4 = - 3