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# algebraic devision

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1. Hi Guys,
does anybody see any problem with this algebraic devision? the quotient should come out as x^2 -5x+10 but mine keep coming x^2-5x-10 i don't what part I'm going wrong
2. (Original post by Alen.m)
Hi Guys,
does anybody see any problem with this algebraic devision? the quotient should come out as x^2 -5x+10 but mine keep coming x^2-5x-10 i don't what part I'm going wrong
Post the attachment and I'll help
3. (Original post by TheBride)
Post the attachment and I'll help
i did actually i don't where it's gone
Attached Images

4. (Original post by Alen.m)
i did actually i don't where it's gone
You've treated the +20 as +20x, I would put an extra term "+0x" in the middle to prevent mix ups (See my solution below)
5. (Original post by Alen.m)
Hi Guys,
does anybody see any problem with this algebraic devision? the quotient should come out as x^2 -5x+10 but mine keep coming x^2-5x-10 i don't what part I'm going wrong
The first problem i can see is your spelling of division, thank me later
6. (Original post by LewisClothier)
The first problem i can see is your spelling of division, thanks me later
I'm kidding, but yeah you need a coefficient of each power of x before trying to divide using long division. (e.g. to divide 3x^4+2x^2+18 by whatever root you find you would need to divide by 3x^4+0x^3+2x^2+0x+18 instead, always remember this step! it'll make a huge difference.
7. (Original post by TheBride)
You've treated the +20 as +20x, I would put an extra term "+0x" in the middle to prevent mix ups (See my solution below)
Thanks mate
8. (Original post by LewisClothier)
I'm kidding, but yeah you need a coefficient of each power of x before trying to divide using long division. (e.g. to divide 3x^4+2x^2+18 by whatever root you find you would need to divide by 3x^4+0x^3+2x^2+0x+18 instead, always remember this step! it'll make a huge difference.
Very well explained thanks
9. (Original post by Alen.m)
Very well explained thanks
not a problem, good luck in your exams!

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