Edexcel GCSE Mathematics May/June 2016 Official Thread

Nope, i think you're wrong, I double checked.

No i can assure you I am right this time

Nope, i think you're wrong, I double checked.

You wrote the question wrong it is x/2 not x-2/2

(x-2)- (2/(x+1))=1 find X

Was the question YOU DID NOT SAY X/2 !

sorry x/2

Listen here u ****ing dickheads I know one of u got the mark scheme so whip it out and put it on the board cuz wallahi if u don't i knows some Somalians who like white boys yeah

Guyyyyys when I'm solving a quadratic equation how I decide which numbers to take away? E.g. if I have 4x + 5 = 6x - 15, how do I know whether to take away 5 or take away 15? I tried taking away 5 and I ended up getting - 1 x = 20!

Guyyyyys when I'm solving a quadratic equation how I decide which numbers to take away? E.g. if I have 4x + 5 = 6x - 15, how do I know whether to take away 5 or take away 15? I tried taking away 5 and I ended up getting - 1 x = 20!

Understand how I did this?

I took away 4x from both sides to get 20 then halved that to get x. But I don't understand how to decide to solve it in that way? What makes you look at the equation and think, 'I will take away 4x'?

Because 6x is bigger than 4x, It doesn't matter which way you do it, I just just find working with -x to be unnecessary.

So usually work with the side that has the biggest x value, try to get the x's on that side.

Say if I ended up with that answer though, how would I get x from -1x?

http://www.mrbartonmaths.com/gcsepapers.htm

If you scroll to the bottom of this page they're there

Mr Barton maths is sooo good!
I love his solutions, as unlike the mark scheme it shows working out aswell