exam Maths Puzzle Numerical Ability

Could someone please help me to simplify
(sqrt) 72x^2y^5

Thanks in advance for your help

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exam Other Question

A student did a word processing job for $24. It took him 1 hour longer than he expected, and therefore he earned $4 per hour less than he anticipated. How long did he expect that it would take to do the job? I have to solve thsse problem for X, if it is an inequality I have to express the answer in interval notation. -19<6x+5<35
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