Answer:
BCD
Step-by-step explanation:
You can easily find out by the points at the end of line. These points indicate that this is line segment.
R = 14
s = 11
2(14)+2(11)=50
28+22=50
2(14) - 11 =17
28 - 11 =17
He couldn't have factored it correctly because 1x x 1x is not 2x its 1x.
