4) Find equation of the sphere if 3x - 72 y + 2 / 2 tonpent plane the point point 6= (2,-1,3). an it ot hindi 3) for the ellipse 24x²+ ugg = 176, find: a) holf-exes lengths, distance between focal points, equation of directrix and eccentricity b) two other vertices of er equilateral triangle of AC-7, ero One vertex i's