A(2;-4) B(3;5)
____________
AB=√(x2-x1)²+(y2-y1)²
_________ ___
AB=√(3-2)²+(5+4)² =√1+81= √82
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A(2;-4) B(3;5)
____________
AB=√(x2-x1)²+(y2-y1)²
_________ ___
AB=√(3-2)²+(5+4)² =√1+81= √82