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2014-04-06T02:09:22+02:00
Exercice 48

a =  (\frac{1}{3})^{-1}

a =  \frac{3}{1}

b = (\frac{2}{5})^{-2}

b =  \frac{5}{2}  × \frac{5}{2}

b = \frac{25}{4}

c =  (\frac{3}{4})^{-3}

c = \frac{4}{3} ×  \frac{4}{3} × \frac{4}{3}

c =  \frac{64}{27}

d =  (-\frac{1}{6})^{-2}

d =  \frac{6}{-1}  ×  \frac{6}{-1}

d =  \frac{36}{1}

e =  (-\frac{7}{5})^{-3}

e =  \frac{5}{-7}  ×  \frac{5}{-7}  ×  \frac{5}{-7}

e =  \frac{125}{-343}