Maximize p = 4.2x + 8.2y + 4z subject to
3.1x+1.2y+z < = 27.5
x+2.3y+z< = 27.5
2.1x+y+2.3z< = 26
x > = 0, y > = 0, z > = 0

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible