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Maths Puzzle
Numerical Ability
x^3 +9x^2+14x/x^2-4
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Two trains start form the same place at the same time heading in directly opposite directions. One train averages 65 mph, and the other train averages 75 mph. After how long will
If possible, simplify the ratinoal expression.
x + 3 / x^2 + 6x + 9