Odd number squared.

[N!ck]

Ive never been taught either of then, my teacher says do it in order w/e the hell that means
so following it (i googled it) i got the same result as i did there?

Yeah, you did it correctly.

Edit: my bad I was looking at your working out, not the original equation.

[kk.]

Yeah, you did it correctly.

Unless this was sarcasm, he didn't.
2n^2 does not mean (2n)^2, which was where he went wrong

[N!ck]

Unless this was sarcasm, he didn't.
2n^2 does not mean (2n)^2, which was where he went wrong

I already corrected myself.

I was looking at (2(2^2 +2) + 1) rather than the original.

[kk.]

dw, I came in before you corrected so didn't see it

[dbgtz]

no i was saying n=1 so 2x1=2 still
i also searched bidmas and used a premade thing.

[kk.]

no i was saying n=1 so 2x1=2 still
i also searched bidmas and used a premade thing.

Yes, but you had 2x2=4. Trust me, go through it yourself, or look at my working, and make sure you square just the 1.

---------- Post added 15-07-2010 at 11:13 AM ----------

no i was saying n=1 so 2x1=2 still
i also searched bidmas and used a premade thing.

Also, it doesn't help that you're going from nicks, and I'm using mine, since I have n = 2k+1, so in mine, k=1

[dbgtz]

what you mean im going from nicks? :S

[kk.]

Nicks equation that he wrote. He has 2n+1, I have 2k+1.
If you're not willing to go through and accept it there's no point in carrying on. I know im right, and if you don't want to accept that, enjoy failing maths, be it at gcse or a level because you will need to know bidmas

In fact, try it on your calculator, it has it programmed to do it.

[N!ck]

what you mean im going from nicks? :S

What he said also applies to mine.

Ok, I said an odd number can be defined as (2n + 1). The odd number you selected is 1.

(2n + 1) = 1 therefore n = 0 in this case.

If you follow 2(2n^2 +2n) + 1 through with n = 0 you will get 1.

So, if your chosen odd number is 3,

(2n + 1) = 3 so n = 1

Follow it through with n = 1 and you get 9.

[dbgtz]

i said n=1 in mine not the whole equation = 1

also im hardly going to fail kk considering im at a b level and im year 10. They made us to practise papers