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 exercitiul 3  (3x-1)x+x=0

Răspuns :

3 * (3x-1)*x + x = 0 9x - 3x + x = 0 7x = 0 / :7 X = 0
(3*3x-3*1)x+x=
(9x-3)x+x=
9x la adoua -3x+x=
9x la a doua -2x