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• oh you have one
dw bro

ill settle them down

good luck man
n0 lol

nah I reckon I got like 80-90 raw

but I know I got 20 for MC
lost like 2-3 in the option, a few here and there

good test tho
20/20 multiple choice

w00t 100 raw
hey wifey do you wanna go dinner this saturday night?
new profile pic again?
hahaha I know what you mean. what's your next exam?
really? I don't think the exam was THAT easy to have such a low E4 cutoff..
I'm expecting 68-69/70
Maybe 67/70
you know my name and school from the ICAS medal list, if it's the same as that then yes

much disappoint
Not sure, depends on how they mark I guess.

Somewhere in the 60's/70.
I didn't find a general expression. You notice that for the term independent of 'x', the 'x' terms of each bracket must cancel out. Now consider the powers of 'x' in each bracket:

The first bracket can have powers:

x^0, x^1, x^2

The second bracket can have powers:

x^5, x^3, x^1, x^-1, x^-3, x^-5

Now we just match them up so that the 'x' from each bracket cancel out, that is, when we take a power from the first bracket and add a power from the second bracket, we want it to equal 0. This only occurs when the first bracket is x^1 and the second bracket is x^-1. Thus finding the co-efficient at these powers:

First bracket: 3^1 x (-2)^1

Second bracket: 5C3 x 1^2 x 2^3

Multiply the two brackets together gives:

3^1 x (-2)^1 x 5C3 x 1^2 x 2^3 = -960
It could be because 'r' is not the same for both brackets.