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(1-3x)(1-4x)+1=(1-2x)(1-6x)

Răspuns :

Răspuns:

(1-3x)(1-4x)+1=(1-2x)(1-6x)

1-4x-3x+12x²+1=1-6x-2x+12x²

-4x-3x+1=-6x-2x

-7x+6x+2x=-1

x=-1