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