(two *x/ three - one / three)/(x^ two + x)^(two / three) = zero
(2 multiply by x divide by 3 minus 1 divide by 3) divide by (x squared plus x) to the power of (2 divide by 3) equally 0
(two multiply by x divide by three minus one divide by three) divide by (x to the power of two plus x) to the power of (two divide by three) equally zero
(2*x/3 - 1/3)/(x2 + x)(2/3) = 0
2*x/3 - 1/3/x2 + x2/3 = 0
(2*x/3 - 1/3)/(x² + x)^(2/3) = 0
(2*x/3 - 1/3)/(x to the power of 2 + x) to the power of (2/3) = 0
(2x/3 - 1/3)/(x^2 + x)^(2/3) = 0
(2x/3 - 1/3)/(x2 + x)(2/3) = 0
2x/3 - 1/3/x2 + x2/3 = 0
2x/3 - 1/3/x^2 + x^2/3 = 0
(2*x divide by 3 - 1 divide by 3) divide by (x^2 + x)^(2 divide by 3) = 0