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

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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)   (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.

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