(3) \( \sqrt{-121} \)

a) \( 65-15: 5=\square \)

1. \( 5.6 \% \quad \frac{1}{15} \)

1. Simplificar a) \( \frac{\frac{2}{x-1}-\frac{3}{(x+1)^{2}}}{\frac{4}{x^{2}-1}} \)

\( 100,50,25,12.5, \ldots= \) geometric \( 1,8,27,64 \ldots= \) general \( 40,30,20,10, \ldots= \) arithmetic \( 0,-2,-4,-6, \ldots= \)

If \( 6+2=4+4 \) and \( 4+4=8 \), then \( 6+2=8 \) \( \begin{array}{l}\text { A) Transitive Property of Equality } \\ \text { B) Reflexive Property of Equality } \\ \text { C) Distributive Property of Equality } \\ \text { D) Symmetric Property of Equality }\end{array} \)