exam Maths Puzzle Numerical Ability

I can't find the correct arrangement. Can you help me?

x^2-y^2-4y-4/x^2-y^2-4x+4

x^2-y^2-z^2-2yz/x^2-y^2+z^2-2xz

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exam Other Question

nine times the first of two consecutive odd integers equals seven times second. find the integers. Here are 2 superficies . The first one has 200 hectars and the second one 45 hectars.How much hectars of each superficie have to be cultivated for the wheat if in the first superfi