exam Maths Puzzle Numerical Ability

Use synthetic division to find the value of f (-2) for f (x) =
x ^3 - 3x^2 - x - 9.

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exam Other Question

(x^3-1)/(x^2+1) divided by (9x^2+9x+9)/(x^2-x). THis problem is giving me a real hard time. I cannot seem to factor the 9x^2+9x+9 to anything less that 9(x^2+x+1) which does not cancel anything out. Am I doing something wrong? How would I do this kind of problem

A telephone number consists of seven digits, the first three representing the exchange. How many different telephone numbers are possible within the 537 exchange?