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Maths Puzzle
Numerical Ability
(8y^2-2y-3) - (9y^2-7y-1)
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book Other Question
Combine: 2y√[27x^3z] – 3x√[3xy^2z]
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If the total charge including 6.50% tax is 17,883.77, then how much is the original charge before the 6.50% tax? It seems that whenever I try to work this out, I end up with 6.50%