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10x(x+6)+5(x+6)la puterea 2

Răspuns :

10x(x+6)+5(x+6)^2 =

10x^2+60x+5(x^2+12x+36) =

10x^2+60x+5x^2+60x+180 =

15x^2+120x+180 =

15(x+6) ori (x+2)