Question 476177
there is a sign error in the first squaring step


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


-2 radical(3x+1) = -2x+2 ___ dividing by -2


radical(3x+1) = x - 1 ___ squaring


3x + 1 = x^2 - 2x + 1 ___ 0 = x^2 - 5x ___ 0 = x(x - 5)