Odpowiedź :
[tex]a) \ (-4)^{7}\times (-4)^{5} = (-4)^{7+5} = (-4)^{12}\\\\b) \ 10^{9}:1000 = 10^{9}:10^{3} = 10^{9-3} = 10^{6}[/tex]
[tex]a) \ (-4)^{7}\times (-4)^{5} = (-4)^{7+5} = (-4)^{12}\\\\b) \ 10^{9}:1000 = 10^{9}:10^{3} = 10^{9-3} = 10^{6}[/tex]