C
camtuyen0000


trong khong gian voi he toa do Oxyz, cho hai diem A(-3;5;-5) va B(
5;-3;7) va mat phang (P)x+y+z-6=0.tim toa do diem M tren mat phang (P) sao cho [TEX]MA^2+MB^2[/TEX] dat gia tri nho nhat
5;-3;7) va mat phang (P)x+y+z-6=0.tim toa do diem M tren mat phang (P) sao cho [TEX]MA^2+MB^2[/TEX] dat gia tri nho nhat