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

Mutiply and simplify:

(4-3 square root 2) (5+2 square root 2) find four consecutive odd intergers such that twice the sum of the first two numbers is eight more than the sum of the last two numbers