Answer:
b
Step-by-step explanation:
4x² - 8x= 0
4x(x -2) = 0
: 4x = 0 or x - 2 = 0
4x = 0
Dividing by 4
x = 0/4
x = 0
And
x - 2 = 0
x = 2
11 : 4
12 : 4 / 4
13 : 6/6
14 : 12 / 4
15: 9/3
16: 4/4
17: 15/5
18: 6/2
19: 10/5
20: 6/6
12-2=10 b=10