SOLUTION: Hello, i need help factoring trinomials where a>1 problem is: 4n^2 - 15n - 25 I dont understand how if the factors of -25 are meant to = - 15 how to do this Thank you

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Hello, i need help factoring trinomials where a>1 problem is: 4n^2 - 15n - 25 I dont understand how if the factors of -25 are meant to = - 15 how to do this Thank you      Log On


   

Question 602706: Hello, i need help factoring trinomials where a>1 problem is:
4n^2 - 15n - 25
I dont understand how if the factors of -25 are meant to = - 15 how to do this
Thank you
Answer by Rcmathtutor(12) About Me  (Show Source):
You can put this solution on YOUR website!
4n%5E2-15n-25
%284n%2B5%29%28n-5%29
The factors of -25 are not mean to be = -15 because -15n results from (4n)(-5) + (5)(n).