exam Maths Puzzle Numerical Ability

i tried this problem on my worksheet and only got half credit, though im not sure why... please explain/show work to me ):

[(2/x)-3] / 1-1/x-1

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exam Other Question

PLease help to factor :

64a^3c^6 + x^6y^9 Find the intercepts of each polynomial function f(x). Find the intervals x for which the graph of f is above the x-axis and below the x-axis. Obtain several other points on the g