$$8 \cdot (\frac{1}{4})^2 - 14 \cdot \frac{1}{4} = 8 \cdot \frac{1}{16} - \frac{14}{4} = \frac{8}{16} - \frac{14}{4} = \frac{1}{2} - \frac{7}{2} = -\frac{6}{2} = -3$$
Ответ: -3