Odpowiedź:
a)
[tex] \frac{ {4}^{5} \times {5}^{6} }{ {20}^{4} } = \frac{ {4}^{5} \times {5}^{6} }{( {4 \times 5)}^{4} } = \frac{ {4}^{5} \times {5}^{6} }{ {4}^{4} \times {5}^{4} } = 4 \times {5}^{2} = 4 \times 25 = 100[/tex]
b)
[tex] \frac{ { {2}^{12} \times {3}^{7} } }{81 \times {4}^{5} } = \frac{ {2}^{12} \times {3}^{7} }{ {3}^{4} \times {( {2}^{2} )}^{5} } = \frac{ {2}^{12} \times {3}^{3} }{ {2}^{10} } = {2}^{2} \times {3}^{3} = 4 \times 27 = 108[/tex]
