26) 0,25.(4)2 =

26) $$0.25 \cdot \left(\frac{1}{4}\right)^2 = \frac{1}{4} \cdot \left(\frac{1}{4}\right)^2 = \left(\frac{1}{4}\right)^{1+2} = \left(\frac{1}{4}\right)^3 = \frac{1}{64}$$

Ответ: 1/64