The square of 3 = the square of 5-4; the square of 5 = the square of 13-12; the law is expressed by the equation containing n Experts help me. Thank you

The general formula of this rule is: (2n + 1) ^ 2 = (2n ^ 2 + 2n + 1) ^ 2 - (2n ^ 2 + 2n) ^ 2
n=1,2,3……

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