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\frac{\left(x-1\right)\left(x-2\right)}{\left(x-2\right)\left(x+2\right)}-\frac{\left(x+5\right)\left(x+2\right)}{\left(x-2\right)\left(x+2\right)}
Da biste zbrojili ili oduzeli izraze, proširite ih da bi imali iste nazivnike. Najmanji zajednički višekratnik brojeva x+2 i x-2 jest \left(x-2\right)\left(x+2\right). Pomnožite \frac{x-1}{x+2} i \frac{x-2}{x-2}. Pomnožite \frac{x+5}{x-2} i \frac{x+2}{x+2}.
\frac{\left(x-1\right)\left(x-2\right)-\left(x+5\right)\left(x+2\right)}{\left(x-2\right)\left(x+2\right)}
Budući da \frac{\left(x-1\right)\left(x-2\right)}{\left(x-2\right)\left(x+2\right)} i \frac{\left(x+5\right)\left(x+2\right)}{\left(x-2\right)\left(x+2\right)} imaju isti nazivnik, oduzmite ih oduzimanje njihovih brojnika.
\frac{x^{2}-2x-x+2-x^{2}-2x-5x-10}{\left(x-2\right)\left(x+2\right)}
Pomnožite izraz \left(x-1\right)\left(x-2\right)-\left(x+5\right)\left(x+2\right).
\frac{-10x-8}{\left(x-2\right)\left(x+2\right)}
Kombinirajte slične izraze u x^{2}-2x-x+2-x^{2}-2x-5x-10.
\frac{-10x-8}{x^{2}-4}
Proširivanje broja \left(x-2\right)\left(x+2\right).
\frac{\left(x-1\right)\left(x-2\right)}{\left(x-2\right)\left(x+2\right)}-\frac{\left(x+5\right)\left(x+2\right)}{\left(x-2\right)\left(x+2\right)}
Da biste zbrojili ili oduzeli izraze, proširite ih da bi imali iste nazivnike. Najmanji zajednički višekratnik brojeva x+2 i x-2 jest \left(x-2\right)\left(x+2\right). Pomnožite \frac{x-1}{x+2} i \frac{x-2}{x-2}. Pomnožite \frac{x+5}{x-2} i \frac{x+2}{x+2}.
\frac{\left(x-1\right)\left(x-2\right)-\left(x+5\right)\left(x+2\right)}{\left(x-2\right)\left(x+2\right)}
Budući da \frac{\left(x-1\right)\left(x-2\right)}{\left(x-2\right)\left(x+2\right)} i \frac{\left(x+5\right)\left(x+2\right)}{\left(x-2\right)\left(x+2\right)} imaju isti nazivnik, oduzmite ih oduzimanje njihovih brojnika.
\frac{x^{2}-2x-x+2-x^{2}-2x-5x-10}{\left(x-2\right)\left(x+2\right)}
Pomnožite izraz \left(x-1\right)\left(x-2\right)-\left(x+5\right)\left(x+2\right).
\frac{-10x-8}{\left(x-2\right)\left(x+2\right)}
Kombinirajte slične izraze u x^{2}-2x-x+2-x^{2}-2x-5x-10.
\frac{-10x-8}{x^{2}-4}
Proširivanje broja \left(x-2\right)\left(x+2\right).