exam Maths Puzzle Numerical Ability

Please help me with this problem (solve the equation and show the steps). Thanks!!
14/(x^2-1)+1/(x-1)=3/x+1

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exam Other Question

Factor the polynomial completely. If the polynomial cannot be factored, choose prime.

x^2 - x - 6
HELP!!

The price of an item is given by p = 2x2 - 100. Find the
polynomial that represents the revenue generated from the sale of x items.