Leysa {l}{9+(1-y)^{2}+(2-z)^{2}=16+(-2-y)^{2}+(-2-z)^{2}}{16+(-2-y)^{2}+(-2-z)^{2}=(5-y)^{2}+(1-z)^{2}}{9+(1-y)^2+(2-z)^2=(5-y)^2+(1-z)^2}

$$\left. \begin{array} { l } { 9 + ( 1 - y ) ^ { 2 } + ( 2 - z ) ^ { 2 } = 16 + ( - 2 - y ) ^ { 2 } + ( - 2 - z ) ^ { 2 } } \\ { 16 + ( - 2 - y ) ^ { 2 } + ( - 2 - z ) ^ { 2 } = ( 5 - y ) ^ { 2 } + ( 1 - z ) ^ { 2 } } \\ { 9 + ( 1 - y ) ^ { 2 } + ( 2 - z ) ^ { 2 } = ( 5 - y ) ^ { 2 } + ( 1 - z ) ^ { 2 } } \end{array} \right.$$

Leystu fyrir y, z

$$y=1$$

$$z=-2$$