$$ \begin{align*} \textbf{Aufgabe} \\ &\quad a) (16 + 30) + (-47 + 5) = ? \\ &\quad b) \frac{2 x^{2} + -47 x - 44}{(x - 7)^{2}} = ? \\ &\quad c) {6}^{2} + 3 \cdot 2 = ? \\ &\quad d) X^{3} - -47 X - -47 + 8 X^{2} - \frac{1}{44} X^{2} = 0 \\ \end{align*} $$