AQA Maths Pure Core 1 MPC1 Jan 13th 2012

one day before the results day next week

Ah right, thanks.

Ah right, thanks.

I'm afraid I think you got the answer wrong :/ Here's what I did:

Question: Express x^2 - 4x - 12 in the form (x - p)^2 - q, where p and q are positive integers.

Working Out:
x^2 - 4x - 12 = 0 (Equate equation to zero)
x^2 - 4x = 12 (Seperate the 'x' terms and the numbers)
(x - 2)^2 + 4 = 12 (Complete the square with the first part of the eq. (note that -2^2 will give positive 4))
(x - 2)^2 - 8 = 0 (Take away 12 from both parts of the eq.)

p = 2, q = 8

Hence, the answer gives p and q as positive integers.
Hope this helps If you got any other questions, I will be happy to answer them for you!

It is meant to be

(x-2)^2-4-12
(x-2)^2-16

you've done it wrong

I got 95

I got 95 UMS also

93

Don't see how this post deserves this many negs?

You put 93 and an unhappy face, 93 is hardly a bad result.. but I wouldn't really thumb down

Oh how silly of me, I forgot. On TSR you get judged and rated; based on which of the smilies you enter. Damn.

93

Don't see how this post deserves this many negs?