(x-2)^2+(y-3)^2+(z+7)^2=144

Х²-4х+4+у²-6у+9+z²+14z+49=144 x²-4x+y²-6y+z²+14z+62=144 x(x-4)+y(y-6)+z(z+14)=144-62 x(x-4)+y(y-6)+z(z+14)=82