exam Maths Puzzle Numerical Ability

how do you do partial fraction decomposition?? Like on a problem such as: 1/(x^2+x)???

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exam Other Question

i have to find the total area of a cube with edge 4. Can someone please help with the following:

f(x)=[x] and g(x)=2x find the following:
(fog)(-3.1)

I believe this to be part of the greatest interger function on page 255 of t