[tex]4a)\\\\4,5^{12}*( \frac{4}{9})^{12}:2^{12}=(4,5*\frac{4}{9}:2)^{12}=(\frac{\not{9}^1}{\not{2}^1}*\frac{\not{4}^{\not{2}^1} }{\not{9}^1}*\frac{1}{\not{2}^1})^{12}= 1^{12}=1\\\\b)\\\\ (-2\frac{1}{5})^{10}:(- 11)^{10}*10^{10}=(-2\frac{1}{5} :(- 11) *10)^{10}= (- \frac{\not{11}^1}{\not{5}^1}*(- \frac{1}{\not{11}^1} ) *\not{10}^2)^{10}=\\\\= 2^{10}=1024[/tex]
