24. By analysing the normals, determine if the two planes intersect in a line, are parallel and distinct, or are coincident. [21 1: X+ 2y+32-3=0 2: 2x-y+2-7=0 availtoning gniwollot edi nowled collegisial lo Jitjog and onionof (1 85 25. By analysing the normals, determine if the three planes intersect in a point. [2] 1: X- 5y+ 2z - 10 = 0 T2: [x, y, z] = [0, 0, 3] + s[2, 0, 1] + #[7, -1, 0] 13: 8x + 5p +2 - 20=0 26. Find a vector perpendicular to both a = [1, 2, 3] and b = [3, 2, -1]. [2]