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determinati x € /N,stiind ca (x+1)+(x+2)+(x+3)=2 la puterea a 3 + 3 la puterea a 3 + 5 la puterea a 2

Răspuns :

3x + 6 = 8 + 27 + 25 = 60
3x = 60 - 6 = 54
x = 54:3 = 18
(x+1)+(x+2)+(x+3)=2³+3³+5²
x+1+x+2+x+3=8+27+25
3x+6=60
3x=54
x=18