SOLUTION: Hello there I was just hoping that someone could help clarify how to solve this quadratic equation. I know that the answers end up being x=6 or -2 but Im not sure that I am carryin

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Hello there I was just hoping that someone could help clarify how to solve this quadratic equation. I know that the answers end up being x=6 or -2 but Im not sure that I am carryin      Log On


   

Question 873799: Hello there I was just hoping that someone could help clarify how to solve this quadratic equation. I know that the answers end up being x=6 or -2 but Im not sure that I am carrying out the steps right using the quadratic formula. Could anyone show me how this works out with all the steps? Thanks!
x^2-4x=12.
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Same as x%5E2-4x-12=0

Directly using the general solution,
x=%28-%28-4%29%2B-+sqrt%28%28-4%29%5E2-4%2A1%2A%28-12%29%29%29%2F%282%2A1%29

Simplifications;
x=%284%2B-+sqrt%284%5E2%2B4%2A12%29%29%2F2
x=%284%2B-+sqrt%2864%29%29%2F2
x=%284%2B-+8%29%2F2
-2 OR 6