Ответ:

34−(−1)4=81−1=80

( - 3 \frac{1}{3} ) ^{3} \times 0.027 = ( - \frac{10}{9} ) ^{3} \times \frac{27}{1000} = - \frac{1000}{27} \times \frac{27}{1000} = - 1(−331)3×0.027=(−910)3×100027=−271000×100027=−1

( - 7)^{2} \times ( - \frac{2}{7}) ^{2} = 49 \times \frac{4}{49} = 4(−7)2×(−72)2=49×494=4

\frac{ {x}^{3} \times x}{( {x}^{2}) ^{2} } = \frac{ {x}^{4} }{ {x}^{4} } = 1(x2)2x3×x=x4x4=1