#1
i've been impressed by the mathematical capabilities of th pit before, so this should prove no bother for y'all.

I can't for the life of me remember how to do this:

"Express x^3 - 4x^2 - 7x +10 in its fully factorised form."

I really want to understand how to do this, aswell as get the answer, so an explanation with any answer would be much appreciated.

e-cookie to whoever can help
Do or do not, there is no try. - Albus Dumbledore
#3
Synthetic Division, cba actually doing it...
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#4
3x^2 - 8x - 7

|
V

6x - 8

Or something like that. I don't know what you mean by factorised
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#7
Quote by SuperSquirrel
i've been impressed by the mathematical capabilities of th pit before, so this should prove no bother for y'all.

I can't for the life of me remember how to do this:

"Express x^3 - 4x^2 - 7x +10 in its fully factorised form."

I really want to understand how to do this, aswell as get the answer, so an explanation with any answer would be much appreciated.

e-cookie to whoever can help

first you have to use the maths thread.
then you have to see what could factorise by guess work (this is the way we were taught in college). First try (x-1) to see if that's a factor.
f(1) = 1 - 4 - 7 + 10
it is so then you can say that (x-1) is a factor
so then you divide x^3 - 4x^2 - 7x + 10 by (x-1)
=> (x^3-4x^2-7x+10) = (x-1)(x^2 - 3x - 10)
=> (x-1)(x-5)(x+2)
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#8
Quote by CrackAddict2000
3x^2 - 8x - 7

|
V

6x - 8

Or something like that. I don't know what you mean by factorised



That's differentiation. Whole other ballpark