Pole kwadratu: P1 = x*x = x^2
Pole prostokąta: P2 = (x-1)*(x+1)= x^2 - 1
P1 - P2 = x^2 - (x^2 - 1) = x^2 - x^2 + 1 = 1
Czyli P1 - P2 = 1
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Pole kwadratu: P1 = x*x = x^2
Pole prostokąta: P2 = (x-1)*(x+1)= x^2 - 1
P1 - P2 = x^2 - (x^2 - 1) = x^2 - x^2 + 1 = 1
Czyli P1 - P2 = 1