a) $$4^3 + 35 = 4 \cdot 4 \cdot 4 + 35 = 64 + 35 = 99$$
б) $$(-8)^2 - (-1)^{10} = (-8) \cdot (-8) - 1 = 64 - 1 = 63$$
в) $$7 \cdot (\frac{3}{7})^2 = 7 \cdot \frac{3^2}{7^2} = 7 \cdot \frac{9}{49} = \frac{7}{49} \cdot 9 = \frac{1}{7} \cdot 9 = \frac{9}{7} = 1 \frac{2}{7}$$
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