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x*y=240'unde x si y sunt numere consecutive


Răspuns :

x=xy=x+1
xy=x*(X+1)=240
x²+x=240
x²+x-240=0
x1= -1`6   y= x+1=-16+1=-15   
x1=-16   y1=-15
x2=15    y2=1+ x2=16     y2=16