To factor each expression using the greatest common factor, we need to find the largest factor that each term has in common and then factor it out.
1. 3x + 6 = 3(x + 2)
2. 4x - 8 = 4(x - 2)
3. 5x + 10 = 5(x + 2)
4. 2x - 4 = 2(x - 2)
5. 6x + 12 = 6(x + 2)
6. 7x - 14 = 7(x - 2)
7. 9x + 18 = 9(x + 2)
8. 8x - 16 = 8(x - 2)
Therefore, the factored expressions are:
1. 3(x + 2)
2. 4(x - 2)
3. 5(x + 2)
4. 2(x - 2)
5. 6(x + 2)
6. 7(x - 2)
7. 9(x + 2)
8. 8(x - 2)