Well, I might as well be the last person to discover this and, in fact, it makes ABSOLUTELY NOTHING even remotely easier, but…

I just realised that every squared number is exactly bigger by 1 than multiplication of the same number lower by one by a number bigger by one.

And then… I realised it’s perfectly explainable.

And then… oh well I should probably stick to drawing.

if

x^2=y

then

(x-1)(x+1)=y-1

x^2 + x – x – 1 =

x^2 – 1 = y-1

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