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2(x-2)=3x+1 ;xla2-9+0

Răspuns :

2(x-2)=3x+1    2x-4=3x+1  x=-5
x³-9=0     x³=9    x=3 x=-3
2(x-2)=3x+1
2x-4=3x-1
x=-5

x²-9=0
x²=9
[tex] x_{12} [/tex]=+-3