Răspuns:
a)
[tex] \frac{2x(x - 1)}{3(x - 1)} = \frac{2x}{3} [/tex]
b)
[tex] \frac{(x + 2)^{2} }{(x - 2)(x + 2)} = \frac{(x + 2)}{(x - 2)} [/tex]
c)
[tex] \frac{(x - 1)(x + 1)}{(x + 1)^{2} } = \frac{(x - 1)}{(x + 1)} [/tex]
