Răspuns:
Explicație pas cu pas:
[tex]\Big[\Big( \frac{ {}^{3)} 1}{3} - \frac{1}{9}\Big) ^{2} + \Big( \frac{1}{3} \Big) ^{3} \Big] \div \Big( \frac{1}{3} \Big) ^{4} \\ [/tex]
[tex] = \Big[\Big( \frac{3 - 1}{9} \Big) ^{2} + \frac{1}{27} \Big] \div \frac{1}{81} \\ [/tex]
[tex] = \Big[\Big( \frac{2}{9} \Big) ^{2} + \frac{1}{27} \Big] \times 81 \\ [/tex]
[tex] = \Big( \frac{4}{81} + \frac{ {}^{3)} 1}{27} \Big) \times 81 \\ [/tex]
[tex] = \frac{4 + 3}{81} \times 81 = \frac{7}{ \not81} \times \not81 = \boxed{7} \\ [/tex]
