exam Maths Puzzle Numerical Ability

42: The difference between the square of one even number and the square of the next smaller even number is 52. What is the larger number?

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Please help me to graph this inequality,
x>1 A farmer has 540 sq meters of land for raising cabbages and carrots. He wants to plant fewer square meters in carrots than cabbages (112 sq meters, to be exact). How many square meters of each should he plant?