a)
[tex]a) \: \: ( {5}^{2} - {2}^{5} \div 2) \div 3 - {1}^{1019} = \\ (25 - 32 \div 2) \div 3 - 1 = \\ 9 \div 3 - 1 = \\ 2[/tex]
[tex]( {3}^{2} \times {2}^{6} - {2}^{5} \times 6) \div 12 - {2}^{5} = \\ (9 \times 64 - 32 \times 6) \div 12 - 32 = \\ 384 \div 12 - 32 = \\ 0[/tex]
(7⁴-7³):(7²-7)-2³•5=
(2401-343):(49-7)-8•5=
2058:42-40=
9
