El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{\left(x + 3\right)^{2}}{x + 1} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = -3$$
Solución numérica$$x_{1} = -3.00000094548813$$
$$x_{2} = -3.00000094194401$$
$$x_{3} = -3.0000008954302$$
$$x_{4} = -3.00000088796415$$
$$x_{5} = -3.00000084423358$$
$$x_{6} = -3.00000077517678$$
$$x_{7} = -3.00000089793046$$
$$x_{8} = -3.00000089360935$$
$$x_{9} = -3.00000087719649$$
$$x_{10} = -3.00000089956642$$
$$x_{11} = -3.00000089650103$$
$$x_{12} = -3.00000088054975$$
$$x_{13} = -3.00000089147112$$
$$x_{14} = -3.0000008858405$$
$$x_{15} = -3.00000088466252$$
$$x_{16} = -3.00000089836588$$
$$x_{17} = -3.00000103932181$$
$$x_{18} = -3.00000089747543$$
$$x_{19} = -3.0000009402267$$
$$x_{20} = -3.00000117486377$$
$$x_{21} = -3.00000093970805$$
$$x_{22} = -3.000000957086$$
$$x_{23} = -3.00000087528506$$
$$x_{24} = -3.000000858611$$
$$x_{25} = -3.00000088339536$$
$$x_{26} = -3.00000094134265$$
$$x_{27} = -3.00000093785613$$
$$x_{28} = -3.00000089067307$$
$$x_{29} = -3.00000074880442$$
$$x_{30} = -3.00000095550151$$
$$x_{31} = -3.0000008889246$$
$$x_{32} = -3.00000094918617$$
$$x_{33} = -3.00000083005008$$
$$x_{34} = -3.00000089699945$$
$$x_{35} = -3.00000127453664$$
$$x_{36} = -3.00000085448314$$
$$x_{37} = -3.00000079444095$$
$$x_{38} = -3.00000089485404$$
$$x_{39} = -3.0000009514375$$
$$x_{40} = -3.00000093874054$$
$$x_{41} = -3.00000099114576$$
$$x_{42} = -3.0000009735303$$
$$x_{43} = -3.00000093828863$$
$$x_{44} = -3.00000084974018$$
$$x_{45} = -3.00000087087172$$
$$x_{46} = -3.00000093629714$$
$$x_{47} = -3.00000099745169$$
$$x_{48} = -2.99999878034085$$
$$x_{49} = -3.0000009366633$$
$$x_{50} = -3.00000093704454$$
$$x_{51} = -3.00000094722004$$
$$x_{52} = -3.0000008898258$$
$$x_{53} = -3.00000102519271$$
$$x_{54} = -3.00000100495008$$
$$x_{55} = -3.0000009374418$$
$$x_{56} = -3.0000008789447$$
$$x_{57} = -3.00000089918277$$
$$x_{58} = -3.00000095404091$$
$$x_{59} = -3.00000097037919$$
$$x_{60} = -3.00000082070016$$
$$x_{61} = -3.0000008683057$$
$$x_{62} = -3.00000097708599$$
$$x_{63} = -3.00000094324538$$
$$x_{64} = -3.00000096276355$$
$$x_{65} = -3.0000009446973$$
$$x_{66} = -3.00000105774804$$
$$x_{67} = -3.00000096069562$$
$$x_{68} = -3.00000089424789$$
$$x_{69} = -3.00000101401448$$
$$x_{70} = -3.00000089597854$$
$$x_{71} = -3.00000087318645$$
$$x_{72} = -3.00000095027244$$
$$x_{73} = -3.00000108278343$$
$$x_{74} = -3.0000009463275$$
$$x_{75} = -3.00000095881087$$
$$x_{76} = -3.00000098112955$$
$$x_{77} = -3.00000089878293$$
$$x_{78} = -3.00000053877771$$
$$x_{79} = -3.00000088202852$$
$$x_{80} = -3.00000086544511$$
$$x_{81} = -3.00000089293574$$
$$x_{82} = -3.00000064977805$$
$$x_{83} = -3.00000094077092$$
$$x_{84} = -3.00000071049769$$
$$x_{85} = -3.00000150079435$$
$$x_{86} = -3.00000094395094$$
$$x_{87} = -3.00000089222411$$
$$x_{88} = -3.00000086223613$$
$$x_{89} = -3.00000094817096$$
$$x_{90} = -3.0000011187614$$
$$x_{91} = -3.00000096504276$$
$$x_{92} = -3.00000026909068$$
$$x_{93} = -3.0000008091297$$
$$x_{94} = -3.00000098576878$$
$$x_{95} = -3.00000095269022$$
$$x_{96} = -3.00000088693842$$
$$x_{97} = -3.00000094257738$$
$$x_{98} = -3.00000093921319$$
$$x_{99} = -3.00000083776273$$
$$x_{100} = -3.00000096756734$$