Evaluer
\frac{x^{2}+4x-4}{\left(x-2\right)\left(x+2\right)^{2}}
Differentier w.r.t. x
\frac{-x^{3}-6x^{2}+12x-24}{\left(x-2\right)^{2}\left(x+2\right)^{3}}
Graf
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\frac{x}{\left(x-2\right)\left(x+2\right)}+\frac{2}{\left(x+2\right)^{2}}
Faktoriser x^{2}-4. Faktoriser x^{2}+4x+4.
\frac{x\left(x+2\right)}{\left(x-2\right)\left(x+2\right)^{2}}+\frac{2\left(x-2\right)}{\left(x-2\right)\left(x+2\right)^{2}}
For tilføje eller fratrække udtryk skal du udvide dem for at gøre nævneren ens. Mindste fælles multiplum for \left(x-2\right)\left(x+2\right) og \left(x+2\right)^{2} er \left(x-2\right)\left(x+2\right)^{2}. Multiplicer \frac{x}{\left(x-2\right)\left(x+2\right)} gange \frac{x+2}{x+2}. Multiplicer \frac{2}{\left(x+2\right)^{2}} gange \frac{x-2}{x-2}.
\frac{x\left(x+2\right)+2\left(x-2\right)}{\left(x-2\right)\left(x+2\right)^{2}}
Da \frac{x\left(x+2\right)}{\left(x-2\right)\left(x+2\right)^{2}} og \frac{2\left(x-2\right)}{\left(x-2\right)\left(x+2\right)^{2}} har den samme fællesnævner, skal du addere dem ved at tilføje deres tællere.
\frac{x^{2}+2x+2x-4}{\left(x-2\right)\left(x+2\right)^{2}}
Lav multiplikationerne i x\left(x+2\right)+2\left(x-2\right).
\frac{x^{2}+4x-4}{\left(x-2\right)\left(x+2\right)^{2}}
Kombiner ens led i x^{2}+2x+2x-4.
\frac{x^{2}+4x-4}{x^{3}+2x^{2}-4x-8}
Udvid \left(x-2\right)\left(x+2\right)^{2}.
Eksempler
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Samtidig ligning
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