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