exam Maths Puzzle Numerical Ability

This is not from a textbook!

divide and check!

64x^8 - 24x^7 +16x^2
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8x^2

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exam Other Question

I am really struggling with how to do this. Can someone please help? Thanks.
[xy^5 / x^-4 y^2]^-2 find 2 consecutive odd integers whose sum is 65.