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