5x+40
5(x + 8)
7x - 49
7(x - 7)
18x + 9
9(2x + 1)
15x - 10
5(3x - 2)
step-by-step explanation:
for number one all you have to do is factor 5 out of 5x + 40
for number 2 factor 7 out of 7x - 49
for number three factor 9 out of 18x + 9
for number four factor 5 out of 15x - 10