Răspuns:
a)
[tex] {( \frac{5}{4} )}^{7} \div {( \frac{5}{4} )}^{4} = { (\frac{5}{4}) }^{3} = \frac{5 {}^{3} }{ {4}^{3} } = \frac{125}{64} = 1 \frac{61}{64}[/tex]
d)
[tex] {( \frac{49}{9})}^{18} \div {(5 \frac{4}{9})}^{17} = { (\frac{49}{9})}^{18} \div { (\frac{49}{9})}^{17} = \frac{49}{9} =5 \frac{4}{9} [/tex]
Sper că te-am ajutat!
