Răspuns:
a
[tex](( - 2 ) {}^{3} ) {}^{4} \div ( - 4) {}^{5} + 81 \div ( - 3) {}^{3} - 2 \times ( - 3) {}^{2} = 4096 \div( - 1024) + 81 \div ( - 27) - 2 \times 9 = - 4 + ( - 3) - 18 = - 7 - 18 = - 25 [/tex]
b
[tex]125 \div ( - 5) {}^{2} + ( - 1) {}^{4} \times ( - 24) \div ( - 2 {}^{3} ) - 144 \div 3 {}^{2} = 125 \div 25 + 1 \times ( - 24) \div ( - 8) - 144 \div 9 = 5 + ( - 24) \div ( - 8) - 16 = 5 + 3 - 16 = 8 - 16 = - 8[/tex]
c
[tex](2 {}^{4} \times ( - 3) {}^{4} \div 6 {}^{2} - 48 \div ( - 3 \times 2 {}^{3} )) \div ( - 19) = (16 \times 81 \div 36 - 48 \div ( - 3 \times 8)) \div ( - 19) = (1296 \div 36 - 48 \div ( - 24)) \div ( - 19) =( 36 - ( - 2)) \div ( - 19) = 38 \div ( - 19) = - 2[/tex]
d
[tex]( - 32 \div ( - 4 {}^{2} ) + 42 \div ( - 7)) \div 2 {}^{2} + 27 {}^{3} \div ( - 9) {}^{4} = ( - 32 \div ( - 2) + ( - 6)) \div 4 + 19683 \div 6561 = (16 + ( - 6)) \div 4 + 3 = 10 \div 4 + 3 = 2.5 + 3 = 5.5[/tex]
