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Cat face x la a2a -x-2x=0

Răspuns :

x²-x-2x = 0
x²-3x = 0
x(x-3) = 0

x1 = 0.
x-3 = 0
x2 = 3.

Little White Lies
x2-x-2x=0

x2-3x=0
x(x-3)=0
x=0 sau x-3=0
              x=3