SOLUTION: Divide and check, (x^2 + 2x - 15)/(x + 5) My answer was, x^2 + 2x - 15/x + 5 x^2 + x^2 + 2x - 15 + 5 x + 2x - 15 + 5 2 - 15 + 5 I am supposed to do polynomial long division o

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Divide and check, (x^2 + 2x - 15)/(x + 5) My answer was, x^2 + 2x - 15/x + 5 x^2 + x^2 + 2x - 15 + 5 x + 2x - 15 + 5 2 - 15 + 5 I am supposed to do polynomial long division o      Log On


   

Question 584336: Divide and check, (x^2 + 2x - 15)/(x + 5)
My answer was,
x^2 + 2x - 15/x + 5
x^2 + x^2 + 2x - 15 + 5
x + 2x - 15 + 5
2 - 15 + 5
I am supposed to do polynomial long division or factor it and I am stuck would appreciate any help
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
(x^2 + 2x - 15)=(x+5)* (x-3)
so
(x+5)* (x-3)/(x + 5)=x-3