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Determinati nr nat x,stiind ca x.(x+1)+(x+1).(x+2)=98

Răspuns :

AnaMaria239
x.(x+1)+(x+1).(x+2)=98 (2x+x)+(2x+3)=98 3x+2x+3=98 5x+3=98 5x=98-3 5x=95 x=95:5 x=19
Ovidiusurlea
x.(x+1)+(x+1).(x+2)=98 (2x+x)+(2x+3)=98 3x+2x+3=98 5x+3=98 5x=98-3 5x=95 x=95:5 x=19

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