[alwaysneedinghelp]

nevermind. I googled it.

[Contrad!ction.]

(Original post by alwaysneedinghelp)
x

=> (k) - 2(k+5) + 1 = 0
=> k - 2k + 10 + 1 = 0

Here, you've multiplied 5 by 2, not -2.

I know what you mean, things like this can be annoying.

[just george]

(k) - 2(k+5) + 1 = 0

k - 2k - 10 + 1 = 0

minus 10 not +10

[alwaysneedinghelp]

thanks guys, I realised just after I posted, didn't think anyone had commented on it

yeah, silly mistake. would have cost me a mark in the exam

[just george]

hehe dont worry we all make them
i had a great numerical methods lesson earlier, missed a minus in a table that ruined an entire question, then wrote a 2 instead of a 3, which ruined another entire question ..gave up when i got stuck again haha

[alwaysneedinghelp]

I usually spend about 20 minutes trying to figure out what went wrong, being too arrogant to start over or accept the fact that i'm wrong and ask for help :P

obviously not in the exam, lol.