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

Solve each system by graphing.
y=-3x-3
y=x+5 Question#2 Find the equation in slope intercept form of the line that passes thru the points (-5,2) and (-4,1). Please help I cant figure it out. If you can break it down into steps that would be awesome. Thanks NR