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\frac{x}{\left(x+1\right)\left(x+2\right)}+\frac{2x-3}{\left(x-1\right)\left(x+1\right)}
Stuðull x^{2}+3x+2. Stuðull 1x^{2}-1.
\frac{x\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+2\right)}+\frac{\left(2x-3\right)\left(x+2\right)}{\left(x-1\right)\left(x+1\right)\left(x+2\right)}
Til að leggja saman eða draga saman segðir skaltu stækka þær til að nefnararnir verði eins. Minnsta sameiginlega margfeldi \left(x+1\right)\left(x+2\right) og \left(x-1\right)\left(x+1\right) er \left(x-1\right)\left(x+1\right)\left(x+2\right). Margfaldaðu \frac{x}{\left(x+1\right)\left(x+2\right)} sinnum \frac{x-1}{x-1}. Margfaldaðu \frac{2x-3}{\left(x-1\right)\left(x+1\right)} sinnum \frac{x+2}{x+2}.
\frac{x\left(x-1\right)+\left(2x-3\right)\left(x+2\right)}{\left(x-1\right)\left(x+1\right)\left(x+2\right)}
Þar sem \frac{x\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+2\right)} og \frac{\left(2x-3\right)\left(x+2\right)}{\left(x-1\right)\left(x+1\right)\left(x+2\right)} eru með sama nefnara skaltu leggja saman með því að leggja saman teljarana.
\frac{x^{2}-x+2x^{2}+4x-3x-6}{\left(x-1\right)\left(x+1\right)\left(x+2\right)}
Margfaldaðu í x\left(x-1\right)+\left(2x-3\right)\left(x+2\right).
\frac{3x^{2}-6}{\left(x-1\right)\left(x+1\right)\left(x+2\right)}
Sameinaðu svipaða liði í x^{2}-x+2x^{2}+4x-3x-6.
\frac{3x^{2}-6}{x^{3}+2x^{2}-x-2}
Víkka \left(x-1\right)\left(x+1\right)\left(x+2\right).
\frac{x}{\left(x+1\right)\left(x+2\right)}+\frac{2x-3}{\left(x-1\right)\left(x+1\right)}
Stuðull x^{2}+3x+2. Stuðull 1x^{2}-1.
\frac{x\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+2\right)}+\frac{\left(2x-3\right)\left(x+2\right)}{\left(x-1\right)\left(x+1\right)\left(x+2\right)}
Til að leggja saman eða draga saman segðir skaltu stækka þær til að nefnararnir verði eins. Minnsta sameiginlega margfeldi \left(x+1\right)\left(x+2\right) og \left(x-1\right)\left(x+1\right) er \left(x-1\right)\left(x+1\right)\left(x+2\right). Margfaldaðu \frac{x}{\left(x+1\right)\left(x+2\right)} sinnum \frac{x-1}{x-1}. Margfaldaðu \frac{2x-3}{\left(x-1\right)\left(x+1\right)} sinnum \frac{x+2}{x+2}.
\frac{x\left(x-1\right)+\left(2x-3\right)\left(x+2\right)}{\left(x-1\right)\left(x+1\right)\left(x+2\right)}
Þar sem \frac{x\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+2\right)} og \frac{\left(2x-3\right)\left(x+2\right)}{\left(x-1\right)\left(x+1\right)\left(x+2\right)} eru með sama nefnara skaltu leggja saman með því að leggja saman teljarana.
\frac{x^{2}-x+2x^{2}+4x-3x-6}{\left(x-1\right)\left(x+1\right)\left(x+2\right)}
Margfaldaðu í x\left(x-1\right)+\left(2x-3\right)\left(x+2\right).
\frac{3x^{2}-6}{\left(x-1\right)\left(x+1\right)\left(x+2\right)}
Sameinaðu svipaða liði í x^{2}-x+2x^{2}+4x-3x-6.
\frac{3x^{2}-6}{x^{3}+2x^{2}-x-2}
Víkka \left(x-1\right)\left(x+1\right)\left(x+2\right).