Find the rule: three + four = five, five + twelve = thirteen, the nth formula is Observe a set of formulas Square of 3 + square of 4 = square of 5 Square of 5 + square of 12 = square of 13 Square of 7 + square of 24 = square of 25 Square of 9 + square of 40 = square of 41 What is the nth formula

(2n+1)^2+(2n^2+2n)^2=(2n^2+2n+1)^2
PS: '^ 2' is the square

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