exam
Maths Puzzle
Numerical Ability
Simplify
x^4 – 3x
3x - x^4
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exam Other Question
Find a value for k so that 9m squared - kn squared will have the factors 3m + 7n and 3m - 7n
x over x^2+15x+56 - 1 over x^2+13x+42 =
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