Esercizio
$\frac { x ^ { 4 } - 3 x - 5 } { x - 2 }$
Soluzione passo-passo
1
Dividere $x^4-3x-5$ per $x-2$
$\begin{array}{l}\phantom{\phantom{;}x\phantom{;}-2;}{\phantom{;}x^{3}+2x^{2}+4x\phantom{;}+5\phantom{;}\phantom{;}}\\\phantom{;}x\phantom{;}-2\overline{\smash{)}\phantom{;}x^{4}\phantom{-;x^n}\phantom{-;x^n}-3x\phantom{;}-5\phantom{;}\phantom{;}}\\\phantom{\phantom{;}x\phantom{;}-2;}\underline{-x^{4}+2x^{3}\phantom{-;x^n}\phantom{-;x^n}\phantom{-;x^n}}\\\phantom{-x^{4}+2x^{3};}\phantom{;}2x^{3}\phantom{-;x^n}-3x\phantom{;}-5\phantom{;}\phantom{;}\\\phantom{\phantom{;}x\phantom{;}-2-;x^n;}\underline{-2x^{3}+4x^{2}\phantom{-;x^n}\phantom{-;x^n}}\\\phantom{;-2x^{3}+4x^{2}-;x^n;}\phantom{;}4x^{2}-3x\phantom{;}-5\phantom{;}\phantom{;}\\\phantom{\phantom{;}x\phantom{;}-2-;x^n-;x^n;}\underline{-4x^{2}+8x\phantom{;}\phantom{-;x^n}}\\\phantom{;;-4x^{2}+8x\phantom{;}-;x^n-;x^n;}\phantom{;}5x\phantom{;}-5\phantom{;}\phantom{;}\\\phantom{\phantom{;}x\phantom{;}-2-;x^n-;x^n-;x^n;}\underline{-5x\phantom{;}+10\phantom{;}\phantom{;}}\\\phantom{;;;-5x\phantom{;}+10\phantom{;}\phantom{;}-;x^n-;x^n-;x^n;}\phantom{;}5\phantom{;}\phantom{;}\\\end{array}$
$x^{3}+2x^{2}+4x+5+\frac{5}{x-2}$
Risposta finale al problema
$x^{3}+2x^{2}+4x+5+\frac{5}{x-2}$