Could someone explain to me as simply as possible how to factorise

2x^2 + x - 3

I know the answer is (2x + 3) (x - 1) from my textbook but I don't understand the method used.

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- January 8th 2011, 10:47 AMNatasha1Factorising a quadratic
Could someone explain to me as simply as possible how to factorise

2x^2 + x - 3

I know the answer is (2x + 3) (x - 1) from my textbook but I don't understand the method used. - January 8th 2011, 10:51 AMsnowtea
- January 8th 2011, 10:53 AMNatasha1
I saw on the net a method called the AC method but that is also confusing

- January 8th 2011, 10:55 AMArchie Meade
- January 8th 2011, 10:56 AMAlso sprach Zarathustra
- January 8th 2011, 10:58 AMWilmer
Nawwww....I say if not apparent, use the quadratic formula...but that's me!

- January 8th 2011, 10:59 AMdwsmith

Now need to figure out which one is negative.

Now you need to decide if 3 is beta and 1 is phi, is alpha 1 or 2 and is lambda 1 or 2? - January 8th 2011, 11:02 AMTheCoffeeMachine
- January 8th 2011, 11:10 AMTheCoffeeMachine
Isn't this just the problem from this thread with just the letter replaced with ?

- January 8th 2011, 11:12 AMNatasha1
that is freaky! They are the same but it's pure coincidence. I promise

- January 8th 2011, 12:30 PMArchie Meade
- January 8th 2011, 04:45 PMWilmer
Compliments will get you everywhere, Archie !