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