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\frac{x+2}{\left(x-1\right)\left(x+5\right)}-\frac{3}{\left(x+1\right)\left(x+5\right)}
Aïlleu la x^{2}+4x-5. Aïlleu la x^{2}+6x+5.
\frac{\left(x+2\right)\left(x+1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}-\frac{3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
Per afegir o restar les expressions, amplieu-les perquè els denominadors coincideixin. El mínim comú múltiple de \left(x-1\right)\left(x+5\right) i \left(x+1\right)\left(x+5\right) és \left(x-1\right)\left(x+1\right)\left(x+5\right). Multipliqueu \frac{x+2}{\left(x-1\right)\left(x+5\right)} per \frac{x+1}{x+1}. Multipliqueu \frac{3}{\left(x+1\right)\left(x+5\right)} per \frac{x-1}{x-1}.
\frac{\left(x+2\right)\left(x+1\right)-3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
Com que \frac{\left(x+2\right)\left(x+1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)} i \frac{3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)} tenen el mateix denominador, resteu-los mitjançant la subtracció dels seus numeradors.
\frac{x^{2}+x+2x+2-3x+3}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
Feu les multiplicacions a \left(x+2\right)\left(x+1\right)-3\left(x-1\right).
\frac{x^{2}+5}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
Combineu els termes similars de x^{2}+x+2x+2-3x+3.
\frac{x^{2}+5}{x^{3}+5x^{2}-x-5}
Expandiu \left(x-1\right)\left(x+1\right)\left(x+5\right).
\frac{x+2}{\left(x-1\right)\left(x+5\right)}-\frac{3}{\left(x+1\right)\left(x+5\right)}
Aïlleu la x^{2}+4x-5. Aïlleu la x^{2}+6x+5.
\frac{\left(x+2\right)\left(x+1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}-\frac{3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
Per afegir o restar les expressions, amplieu-les perquè els denominadors coincideixin. El mínim comú múltiple de \left(x-1\right)\left(x+5\right) i \left(x+1\right)\left(x+5\right) és \left(x-1\right)\left(x+1\right)\left(x+5\right). Multipliqueu \frac{x+2}{\left(x-1\right)\left(x+5\right)} per \frac{x+1}{x+1}. Multipliqueu \frac{3}{\left(x+1\right)\left(x+5\right)} per \frac{x-1}{x-1}.
\frac{\left(x+2\right)\left(x+1\right)-3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
Com que \frac{\left(x+2\right)\left(x+1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)} i \frac{3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)} tenen el mateix denominador, resteu-los mitjançant la subtracció dels seus numeradors.
\frac{x^{2}+x+2x+2-3x+3}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
Feu les multiplicacions a \left(x+2\right)\left(x+1\right)-3\left(x-1\right).
\frac{x^{2}+5}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
Combineu els termes similars de x^{2}+x+2x+2-3x+3.
\frac{x^{2}+5}{x^{3}+5x^{2}-x-5}
Expandiu \left(x-1\right)\left(x+1\right)\left(x+5\right).