SOLUTION: Factor 2x^3+7x^2-3x-18 completely, given that x+2 is a factor. I divided the string by x+2 and came up with 2x^2+3x-3, but the answer is supposed to be 2x^2+3x-9. How do I get th

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equation Customizable Word Problems -> SOLUTION: Factor 2x^3+7x^2-3x-18 completely, given that x+2 is a factor. I divided the string by x+2 and came up with 2x^2+3x-3, but the answer is supposed to be 2x^2+3x-9. How do I get th      Log On


   



Question 436871: Factor 2x^3+7x^2-3x-18 completely, given that x+2 is a factor.
I divided the string by x+2 and came up with 2x^2+3x-3, but the answer is supposed to be 2x^2+3x-9. How do I get the 9?

Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
(2x^3+7x^2-3x-18):(x+2)=2x^2+3x-9
-(2x^3+4x^2)
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3x^2-3x-18
-(3x^2+6x)
----------------
-9x-18
-(-9x-18)
----------------
0.