Question

factor and simplify
(2x+5)^2(3)(x^2+3)^2(2x) - (x^2+3)^3(2)(2x+5)(2)/(2x+5)^4

Answer 1

http://www.wolframalpha.com/input/?i=%282x%2B5%29^2%283%29%28x^2%2B3%29^2%282x%29+-+%28x^2%2B3%29^3%282%29%282x%2B5%29%282%29%2F%282x%2B5%29^4

Answer 2

everything is over (2x+5)^4 :P not just the last term