mark schemes

if i answer a question correctly but use a different method to the mark scheme, will i still get full marks?for example, in c1 maths a question if i'm asked to solve an equation for x and i complete the square. but the method on the mark scheme says factorize even though my answer is the same, will i lose marks?

(edited 6 years ago)

Reply 1

okey

id penalise you lol why would you not factorise

Reply 2

sulaimanali

please give a full example..

Reply 3

HKHASSAN

I did the same thing in C1 when finding the answer to 9 ii in the June 2011 paper.

Used simultaneous equations instead of co-ordinate geometry to work it out.

Nothing on simultaneous equations in the mark scheme, got the same end result.

Reply 4

Stephenmacaulay

Original post by sulaimanali

please give a full example..

solve the equation 9x^2 +18x -7

im not good with factorising things like that so i completed the square

Reply 5

sulaimanali

oh ok..thanks
(3x-1)(3x+7)

Reply 6

gdunne42

Original post by Stephenmacaulay

Unless a question specifies the method required then you will be fine.
E.g. Using factorisation, completing the square OR the formula is always acceptable as long as you come up with the right answer

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