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\frac{\left(2n^{2}-2n-12\right)\left(3n^{2}+6n-9\right)}{\left(12-6n-6n^{2}\right)\left(n^{2}-6n+9\right)}
Dividiu \frac{2n^{2}-2n-12}{12-6n-6n^{2}} per \frac{n^{2}-6n+9}{3n^{2}+6n-9} multiplicant \frac{2n^{2}-2n-12}{12-6n-6n^{2}} pel recíproc de \frac{n^{2}-6n+9}{3n^{2}+6n-9}.
\frac{2\times 3\left(n-3\right)\left(n-1\right)\left(n+2\right)\left(n+3\right)}{6\left(n+2\right)\left(-n+1\right)\left(n-3\right)^{2}}
Calculeu les expressions que encara no s'hagin calculat.
\frac{-2\times 3\left(n-3\right)\left(n+2\right)\left(n+3\right)\left(-n+1\right)}{6\left(n+2\right)\left(-n+1\right)\left(n-3\right)^{2}}
Extraieu el signe negatiu de -1+n.
\frac{-\left(n+3\right)}{n-3}
Anul·leu 2\times 3\left(n-3\right)\left(n+2\right)\left(-n+1\right) tant al numerador com al denominador.
\frac{-n-3}{n-3}
Expandiu l'expressió.
\frac{\left(2n^{2}-2n-12\right)\left(3n^{2}+6n-9\right)}{\left(12-6n-6n^{2}\right)\left(n^{2}-6n+9\right)}
Dividiu \frac{2n^{2}-2n-12}{12-6n-6n^{2}} per \frac{n^{2}-6n+9}{3n^{2}+6n-9} multiplicant \frac{2n^{2}-2n-12}{12-6n-6n^{2}} pel recíproc de \frac{n^{2}-6n+9}{3n^{2}+6n-9}.
\frac{2\times 3\left(n-3\right)\left(n-1\right)\left(n+2\right)\left(n+3\right)}{6\left(n+2\right)\left(-n+1\right)\left(n-3\right)^{2}}
Calculeu les expressions que encara no s'hagin calculat.
\frac{-2\times 3\left(n-3\right)\left(n+2\right)\left(n+3\right)\left(-n+1\right)}{6\left(n+2\right)\left(-n+1\right)\left(n-3\right)^{2}}
Extraieu el signe negatiu de -1+n.
\frac{-\left(n+3\right)}{n-3}
Anul·leu 2\times 3\left(n-3\right)\left(n+2\right)\left(-n+1\right) tant al numerador com al denominador.
\frac{-n-3}{n-3}
Expandiu l'expressió.