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