Exercise 2 Directions: Determine the GCF. 1) 12 = 2 x 2 x 3 20 = 2 x 2 x 5 4) 28 = 2 x 2 x 7 42 = 2 x 3 x 7 2) 18 = 3x3 x 2 24 = 2 x 2 x 2 x3 5) 24 = 2 x 22 x 3 12 = 2 x 2 x 3 3) 20 = 2 x 2 x 5 30 = 2 x 3 x 5​.please po e answer