SOLUTION: Why do you factor a quadratic equation before you solve it? When solving a rational equation, why is it ok to remove the denominator by multiplying both sides by the LCD? Why

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Why do you factor a quadratic equation before you solve it? When solving a rational equation, why is it ok to remove the denominator by multiplying both sides by the LCD? Why      Log On


   

Question 5419: Why do you factor a quadratic equation before you solve it?
When solving a rational equation, why is it ok to remove the denominator by multiplying both sides by the LCD?
Why can you not do the same operation when simplifying a rational expression?
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
look at my previously answered questions - one of them explains factorisation of quadratic - reasons etc. It will help.

Jon.