3.a)
[tex] ( {3}^{3} \times {3}^{5} ) ^{4} \div ( - {3}^{2} ) ^{6} \div (27) ^{3} = ({3}^{8} ) ^{4} \div ( - 3) ^{12} \div ({3}^{3} ) ^{3} = {3}^{32} \div {3}^{12} \div {3}^{9} = {3}^{11} [/tex]
b)
[tex](1 + 1 - 1 + {3}^{27} \div {3}^{26} ) \times 4 + 4 = (1 + 3) \times 4 + 4 = 16 + 4 = 20[/tex]
1.a)
[tex]( | - {3}^{2} - {3}^{3} | + 3 - 2 \times ( - 2)) \div ( - 43) =( | - {3}^{5} | + 3 + 4) \div ( - 43) = (243 + 3 + 4) \div ( - 43) = 250 \div ( - 43) = \frac{250}{ - 43} [/tex]
