-((one + three /x^ two)^ two /(x + three - three /x) + six /x^ three)/(x + three - three /x) = zero
minus ((1 plus 3 divide by x squared ) squared divide by (x plus 3 minus 3 divide by x) plus 6 divide by x cubed ) divide by (x plus 3 minus 3 divide by x) equally 0
minus ((one plus three divide by x to the power of two) to the power of two divide by (x plus three minus three divide by x) plus six divide by x to the power of three) divide by (x plus three minus three divide by x) equally zero