exam Maths Puzzle Numerical Ability

Hi,
1: Multiply and reduce the algebraic fractions.
(X^2-3X-4/X) (2X^2/X-4).
2: Subtract and reduce the algebraic fractions.
(3/X-5)-(2/X)
Thanks A TON!

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exam Other Question

When numbering the pages of a book, a printer uses 522 digits. How many numbered pages does the book have? x to the 2nd + 7x + x to the 2nd - 4x
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x to the 2nd - 5x x to the 2nd - 5x