exam Maths Puzzle Numerical Ability

divide and simplify

x^2-4 /x-2 divide 1/x^2-x

thank you

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exam Other Question

If the reciprocal of 4 times a number is subtracted from the reciprocal of that number, the result is 1/12. What is the number?
can it be 6 factor this

15x^2-13xy+2y^2