exam Maths Puzzle Numerical Ability

let f(x)=x^3-1 and g(x)=x^2+x+1. find (f/g)(x)

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exam Other Question

Prove this:

(n ) (n)=(n+1)
(k-1) +(k)=(k)

Each "term" is supposed to be in the same parentheses but aligned on top of each other. "n" and "k-1" are in the same parenthe How many ways can 12 people out of 300 be selected for a jury?