SOLUTION: x^2 + 6x + 8 = 0 Solve quadratic equation by factoring and show a check of your solutions back into the original equation. I've gotten the factoring completed, having trouble wit

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: x^2 + 6x + 8 = 0 Solve quadratic equation by factoring and show a check of your solutions back into the original equation. I've gotten the factoring completed, having trouble wit      Log On


   

Question 979144: x^2 + 6x + 8 = 0 Solve quadratic equation by factoring and show a check of your solutions back into the original equation. I've gotten the factoring completed, having trouble with checking the solution. Please HELP!! Greatly appreciated.
Here's what I have:
x^2 + 6x + 8 = 0
(x+2)(x+4)=0
x+2=0
x+4=0
{-2, -4)


Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
you did it correct
+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2Cx%5E2+%2B+6x+%2B+8%29+
check:
x%5E2+%2B+6x+%2B+8+=+0.....if x=-2
%28-2%29%5E2+%2B+6%28-2%29+%2B+8+=+0
4+-12+%2B+8+=+0
12-12+=+0
0=+0

x%5E2+%2B+6x+%2B+8+=+0.....if x=-4
%28-4%29%5E2+%2B+6%28-4%29+%2B+8+=+0
16+-24+%2B+8+=+0
24-24+=+0
0=+0