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Factorise −2x^3 − 7x^2 + 5x + 4

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1. knowing that (x+4) factorises without remainders
2. (Original post by Mina_)
knowing that (x+4) factorises without remainders
so is the question -2x times 3-7x times 2+ 5x+ 4?
3. (Original post by Mina_)
oh Iqbal youre so hilarious
LOOOOOOOOOOOL Did you click on it
4. (Original post by x-bhakti-patel)
so is the question -2x times 3-7x times 2+ 5x+ 4?
No. im afraid not, and i hope you don't take maths.
5. (Original post by Mina_)
knowing that (x+4) factorises without remainders
Long divide x+4 out to get the remaining quadratic.
6. Do long division with (x+4) then factorise the quotient.
7. (Original post by Vikingninja)
Do long division with (x+4) then factorise the quotient.
Already have, only to get (2x-1)(1-x)(x+4)
which isnt the right answer on the mark scheme so I wanted to see what other people did
8. (Original post by Mina_)
Already have, only to get (2x-1)(1-x)(x+4)
which isnt the right answer on the mark scheme so I wanted to see what other people did
Can you show what you got from the long division?
9. (Original post by Iqbal Tutt)
LOOOOOOOOOOOL Did you click on it
My message is being checked by a moderator now because of you, and nah already knew what it was
10. (Original post by Luiswright31)
No. im afraid not, and i hope you don't take maths.
I did it for GCSE and got a C, but no if ur asking if i take maths for A- Level then i am afraid not.
11. (Original post by Vikingninja)
Can you show what you got from the long division?
This is what I did
Attached Images

12. (Original post by Mina_)
This is what I did
not sure where that -1 with 2x came from. Those two brackets would give -2x^2 + 3x -1.
13. I got -2x^2+x+1 from dividing which factorises to (-2x-1)(x-1)

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