Recent content by pingvincina

Croatian-native(yeey) English(been studying it for 11 years now) German(7th year now) some words in russian...

Usually white, but blue cross also pwns...Thinking of switching to color neutral because of what musli4brekkies said but it' pretty hard:)

You're a beast man :O

Hehe...That's a good comparison:)...I agree with your opinion about teachers teaching formulas to kids because by solving so many problems(''practicing'') they lose creativity...But it's enough spamming now I think:D

Sorry I had other things on my mid so i wrote determinant:D...Of course I meant discriminant*. I'm not saying that they are not allowed to use other methods. It's just that they are learning something new and they have to work it out by solving problems. That's all. And when they have better...

@Nitrocan: If they're still learning about determinant that means that they are on the beginning of quadratic equation. That means that she probably didn't learn about that decomposition. @BeautifullyDecayed.: Yes that is the correct answer

c=k*(k-1)=35/4 She already wrote that she doesn't know about Viete -.-''

x1 = -b + sqrt(b^2 -4ac) /2a x2 = -b - sqrt(b^2 -4ac) /2a And then you just throw in the numbers you know. a=1 b=6 And you get: x1= -6 + sqrt(36-4c) /2 x1= -6 - sqrt(36-4c) /2

I was writing the post while you posted yours. Yes, as you can see from my post, it's possible to put an exact number to c:)

So the solution of this problem should be something like this: x^2+6x+c=0 x1=k x2=k-1 That means this: x1=x2+1 (To shorten the solution I wil use D instead of 36-4c) x1= (-6 + D)/2 x2= (-6 - D)/2 From x1=x2+1 we get: (-6 + D)/2= (-6 - D)/2 +1 You should know what's next now;)...let me know...

If c>9 then D(discriminant)<0 If c<9 then D>0

Have you learned about Viete's formulas?

I did about 100 F2L solves on the f2l cube and it was too easy. I think I just need to work on my look ahead much more, but thank you all for your opinions:)

My F2l is stuck at 13-18 seconds. Does it help to make an F2L cube(with first two layers only) and practice F2L on it?

I got my third sub-4 today on 3x3x3 BLD...it was 3:28.xx...yeyyy...that's a PB for now...M2/old pochmann...sub-3 next time i hope:)