exam Maths Puzzle Numerical Ability

I am really struggling with how to do this. Can someone please help? Thanks.
[xy^5 / x^-4 y^2]^-2

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exam Other Question

Dividing Polynomials : synthetic division


x^4 - 6x^3 + 2x - 4 divided by x -3


please help me if you can
2/2x+1=1/5