Distance between points A-B

A= (-1, 1)
B= (3, 1)

1,1-3,1=2

so I think 2,0

for this case we have the following expression:

to solve, we rewrite the expression as:

we apply double c and we have:

thus, the quotient is 48.

so, patel found a wrong ratio and the multiplication was incorrect.

option d