exam Maths Puzzle Numerical Ability

Solve by completing the square: x2 +2x−24 = 0

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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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The product of 6 and 9 times the number is the same as the difference of 10 times the number and 2