Question

Cat inseamna $( \frac{1}{-1}: 2 supra 1 )^-2$ ??

Answer 1

[tex]( \frac{1}{-1} : \frac{2}{1} )^{-2}=( \frac{1}{-1} \cdot \frac{1}{2} )^{-2}=( \frac{1}{-2})^{-2}=\\ = ( \frac{-2}{1})^{2}=(-2)^2=4[/tex]Scrie răspunsul tău aici