exam Maths Puzzle Numerical Ability

Can you please help simply the following division problem?

3x^4y^-2
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9x^6y^4

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exam Other Question

Find the mean and the median.
-6, -3, 1, 5, 9, 18 On the page it says to simplify the expression. If you could explain to me how to simplify expressions that would be very helpful. I need help with all of them, but here's an examp