Volgorde van bewerkingen

Reken uit

\(\sqrt{\dfrac{4}{25}}-\left(\dfrac{13}{10}\right)^2\)

\(\sqrt{\dfrac{4}{25}}-\left(\dfrac{13}{10}\right)^2= \dfrac{2}{5} - \dfrac{169}{100}= \dfrac{40}{100} - \dfrac{169}{100}= \dfrac{-129}{100}\)