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[tex] x^{3} [/tex] - 2x[tex] ^{2} [/tex]supra x la patrat - 4
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Iakabcristina2
[tex] \frac{ x^{2} (x-2)}{(x-2)(x+2)} = \frac{ x^{2} }{x+2} [/tex]
[tex]\dfrac{x^3-2x^2}{x^2-4}=\dfrac{x^2(x-2)}{(x-2)(x+2)}=\dfrac{X^2}{x+2}\forall\ x\in \mathbb{R}\ \backslash \{\pm 2\}[/tex]

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