What is the distance between #(-7, 7) # and #(5, 6) #?
The distance between the two points is:
When you are not sure of something make a quick sketch so you can see more clearly what the situation is.
Let point 1 be
Let point 2 be
Let the direct distance between the two points be
The change in down is:
The change in along is:
The only factors of 145 are 1, 5, 9, 145,
So we can not break this down into simplified surds (roots)
So we represent the solution as
The sign of