Find the distance between d(P1,p2) between the points P1 and P2

Question

P1= (-1,-5), P2 = (6, -6)

and i also need help with this problem

x 8
____ - ____
x^2-64 64-x^2

Answer 1

For the first problem,
Distance = sqrt[(y2-y1)^2 + (x2-x2)^2]
= sqrt[(-1)^2 + 7^2] = sqrt 50 = 7.071..

Your second problem did not print out in a way that makes sense. I assume you meant
x/(x^2-64) -8/(64-x^2)
= x/(x^2-64) + 8/(x^2-64)
= (x+8)/[(x+8)*(x-8)]
= 1/(x-8)