El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{\left(x^{2} + 2 x\right) + 1}{x + 2} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = -1$$
Solución numérica$$x_{1} = -0.999999546135692$$
$$x_{2} = -0.999999551818415$$
$$x_{3} = -0.999999291488136$$
$$x_{4} = -0.999999615554391$$
$$x_{5} = -0.999999547663874$$
$$x_{6} = -0.999999549103296$$
$$x_{7} = -0.999999552360846$$
$$x_{8} = -0.999999545422003$$
$$x_{9} = -0.999999548822139$$
$$x_{10} = -0.999999545803836$$
$$x_{11} = -0.99999953416164$$
$$x_{12} = -0.999999578701926$$
$$x_{13} = -0.999999526512286$$
$$x_{14} = -0.999999519912975$$
$$x_{15} = -0.999999511954718$$
$$x_{16} = -0.999999573363602$$
$$x_{17} = -0.999999532073429$$
$$x_{18} = -0.999999556152348$$
$$x_{19} = -0.999999517794961$$
$$x_{20} = -0.999999535818514$$
$$x_{21} = -0.99999953171814$$
$$x_{22} = -0.999999546956279$$
$$x_{23} = -0.999999535319075$$
$$x_{24} = -0.999999535929779$$
$$x_{25} = -0.999999546020165$$
$$x_{26} = -0.999999528797808$$
$$x_{27} = -0.999999557233868$$
$$x_{28} = -0.999999545909653$$
$$x_{29} = -0.999999546256582$$
$$x_{30} = -0.999999494294037$$
$$x_{31} = -0.999999561650136$$
$$x_{32} = -0.999999535178578$$
$$x_{33} = -0.999999549730301$$
$$x_{34} = -0.999999550874587$$
$$x_{35} = -0.99999953373771$$
$$x_{36} = -0.999999547867513$$
$$x_{37} = -0.999999529957359$$
$$x_{38} = -0.999999523165545$$
$$x_{39} = -0.999999552960145$$
$$x_{40} = -0.99999953558043$$
$$x_{41} = -0.999999566216246$$
$$x_{42} = -0.999999535702182$$
$$x_{43} = -0.999999547290463$$
$$x_{44} = -0.999999502169346$$
$$x_{45} = -0.99999950776893$$
$$x_{46} = -0.999999532991884$$
$$x_{47} = -0.999999555205375$$
$$x_{48} = -0.999999536236283$$
$$x_{49} = -0.9999995693474$$
$$x_{50} = -0.999999534538365$$
$$x_{51} = -0.999999536138379$$
$$x_{52} = -0.999999532707661$$
$$x_{53} = -0.999999548559678$$
$$x_{54} = -0.999999548314108$$
$$x_{55} = -0.999999563706608$$
$$x_{56} = -0.999999482401602$$
$$x_{57} = -0.999999529406686$$
$$x_{58} = -0.99999953545287$$
$$x_{59} = -0.99999954940522$$
$$x_{60} = -0.999999531333148$$
$$x_{61} = -0.999999534711423$$
$$x_{62} = -0.99999946236498$$
$$x_{63} = -0.999999535030861$$
$$x_{64} = -0.99999954665545$$
$$x_{65} = -0.999999545511742$$
$$x_{66} = -0.999999558480804$$
$$x_{67} = -0.999999755343494$$
$$x_{68} = -0.999999525546227$$
$$x_{69} = -0.999999536036302$$
$$x_{70} = -0.999999534355396$$
$$x_{71} = -0.999999553625751$$
$$x_{72} = -0.999999533956113$$
$$x_{73} = -0.999999546802015$$
$$x_{74} = -0.999999528120984$$
$$x_{75} = -0.999999547118865$$
$$x_{76} = -0.999999559934248$$
$$x_{77} = -0.999999554369312$$
$$x_{78} = -0.999999546383218$$
$$x_{79} = -0.999999548083849$$
$$x_{80} = -0.999999521675672$$
$$x_{81} = -0.999999545605139$$
$$x_{82} = -0.999999547471846$$
$$x_{83} = -0.999999550081309$$
$$x_{84} = -0.99999953325711$$
$$x_{85} = -0.999999530914565$$
$$x_{86} = -0.999999550461474$$
$$x_{87} = -0.999999586144016$$
$$x_{88} = -0.999999534875353$$
$$x_{89} = -0.999999527364167$$
$$x_{90} = -0.999999532402324$$
$$x_{91} = -0.999999421455312$$
$$x_{92} = -0.999999530457794$$
$$x_{93} = -0.999999515202147$$
$$x_{94} = -0.999999524441387$$
$$x_{95} = -0.999999533505181$$
$$x_{96} = -0.999999597239177$$
$$x_{97} = -0.999999551325125$$
$$x_{98} = -0.999999651554745$$
$$x_{99} = -0.99999954651602$$
$$x_{100} = -0.999999545702421$$