You're offline. Some features may be limited.
( begin array l f(x, y)=x^ 2 +y^ 2 -10 x+6 y+25 g(x, y)=x^ 2 +y^ 2 +6 x-6 y-31 h(x, y)=3 x-4 y+5 end array ) | Suva Ai