The Student Room Group

Factor theorem - is this even possible?

Is 4x3+12x2+5x6=04x^3+12x^2+5x-6=0 even possible to solve using factor theorem? Using the method my teacher taught me using f(-1), f(2) etc i cant do it :/
Original post by chris_d
Is 4x3+12x2+5x6=04x^3+12x^2+5x-6=0 even possible to solve using factor theorem? Using the method my teacher taught me using f(-1), f(2) etc i cant do it :/


What is f(2)f(-2)?
Reply 2
Original post by TheMagicMan
What is f(2)f(-2)?


omg. i'm so stupid :L I even tried it before and somehow got an answer of 5.....my head is deffo not screwed on this week!

thanks, your like some maths genius :P but seriously...please come and teach our class, our teacher is crap...

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