exam Maths Puzzle Numerical Ability

simplifiy (2x2 + y2)(x - 2y) and 4x(3x2 + 2x + 1)
then add together.

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exam Other Question

joe can paint all the rooms of a house in 20 hours it takes ross 60 hours to do the same thing. How long would it iake them if they worked together? Harrison earns $15 per hour cutting grass and $11 an hour selling papers. One week he earns $459 working a total of 37 hours. How many hours did he work at each job?