Question

(3X+1)^2=3(X+1)

Answer 1

$(3x+1) ^{2} =3(x+1) \ 9 x^{2} +1+6x=3x+3 \ 9 x^{2} +6x-3x+1-3=0 \ 9 x^{2} -3x-2=0\D=9+72=81 \ sqrt{D} =9 \ x_{1} = frac{3+9}{18} = frac{12}{18} = frac{2}{3} \ x_{2} = frac{3-9}{18} =- frac{6}{18} =- frac{1}{3}$