Question 574596
3x^2-2x+7=0



3x^2-2x=-7



3(x^2-2/3x)=-7



3(x^2-2/3x+1/9)=-7+3*(1/9)



3(x^2-2/3x+1/9) = -20/3



3(x-1/3)^2 = -20/3



(x-1/3)^2 = (-20/3)/3



(x-1/3)^2 = -20/9