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Maths Puzzle
Numerical Ability
4) Perform the operation: (5x2 - 3x - 9) + (2x2 - 7x + 4)
5) Multiply: [(1/4)z + (1/3)][(1/4)z - (1/5)]
6)Simplify and evaluate:
(22x5y-3z4/40x-2y-8z5)3
thank you very much
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