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