Răspuns:
a) [tex](-\frac{125}{8} )*\frac{2}{5} *(-\frac{4}{25} )=\frac{125*2*4}{8*5*25} =1[/tex]
b) [tex](\frac{2}{5} *(-\frac{4}{25} ))*(-\frac{125}{8} )=(-\frac{8}{125}) *(-\frac{125}{8}) =1[/tex]
c) [tex](-\frac{8}{125}) :(\frac{2}{5} *(-\frac{4}{25} ))=(-\frac{8}{125}) :(-\frac{8}{125}) =\frac{8}{125} *\frac{125}{8} =1[/tex]
Explicație pas cu pas: