Odpowiedź:
[tex]a)\ \ \dfrac{5^4+5^4+5^4+5^4+5^4}{5^3}=\dfrac{5\cdot5^4}{5^3}=\dfrac{5^{1+4}}{5^3}=\dfrac{5^5}{5^3}=5^{5-3}=5^2=25\\\\\\b)\ \ 0,25^4\cdot\frac{28^6}{7^6}=0,25^4\cdot(\frac{28}{7})^6=0,25^4\cdot4^6=(0,25\cdot4)^6=1^6=1\\\\\\c)\ \ \dfrac{2^6\cdot5^1^2\cdot\not7^6}{\not3,5^6}:10^{10}=\dfrac{2^6\cdot5^{12}\cdot2^6}{1}:10^{10}=2^6\cdot5^{12}\cdot2^6:10^{10}=[/tex]
[tex]=2^6\cdot2^6\cdot5^{12}:10^{10}=2^{12}\cdot5^{12}:10^{10}=(2\cdot5)^{12}}:10^{10}=10^{12}:10^{10}=10^{12-10}=\\\\=10^2=100[/tex]
