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ajutatima varog la aceste ex.

Ajutatima Varog La Aceste Ex class=

Răspuns :

2.
[tex] \left \{ {{ \frac{ x^{2} -7}{3x-2} } \atop {x=2}} \right. [/tex]
[tex] \frac{ (-2)^{2} -7}{3(-2)-2} = \frac{4-7}{-6-2} = \frac{-3}{-8} = \frac{3}{8} [/tex]

3.
[tex] \frac{2x(x-2)}{(x+2)(x-2)} = \frac{2 x^{2} -4}{ x^{2} -4} [/tex]