Exercice 48
a = [tex] (\frac{1}{3})^{-1} [/tex]
a = [tex] \frac{3}{1} [/tex]
b = [tex](\frac{2}{5})^{-2}[/tex]
b = [tex] \frac{5}{2} [/tex]×[tex] \frac{5}{2} [/tex]
b = [tex]\frac{25}{4}[/tex]
c = [tex] (\frac{3}{4})^{-3} [/tex]
c = [tex]\frac{4}{3}[/tex] × [tex] \frac{4}{3}[/tex] × [tex]\frac{4}{3}[/tex]
c = [tex] \frac{64}{27} [/tex]
d = [tex] (-\frac{1}{6})^{-2} [/tex]
d = [tex] \frac{6}{-1} [/tex] × [tex] \frac{6}{-1} [/tex]
d = [tex] \frac{36}{1} [/tex]
e = [tex] (-\frac{7}{5})^{-3} [/tex]
e = [tex] \frac{5}{-7} [/tex] × [tex] \frac{5}{-7} [/tex] × [tex] \frac{5}{-7} [/tex]
e = [tex] \frac{125}{-343} [/tex]
