Factor the polynomial completely.
12x2 + 11x – 15 = 0

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

Rewrite so the subject can be y in the formula d=m-y/y+n

What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.