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A)1/2x(2x-1)+1/3x(2x-1)+1/6x(2x-1)=1
B)8x-4x(3x-2)=3


Răspuns :

8x-12x ^2 +8x =3
-12x ^2 +16x - 3=/(-1)
12x^2-16x+3=0 si rezolvi ec de gradul II