Volgorde van bewerkingen (gevorderd)

Reken uit

\(\left(-\dfrac{5}{2}\cdot\dfrac{20}{65}-\dfrac{1}{13}\right)^2\)

\(\left(-\dfrac{5}{2}\cdot\dfrac{20}{65}-\dfrac{1}{13}\right)^2= \left(-\dfrac{5.20}{2.65}-\dfrac{1}{13}\right)^2= \left(-\dfrac{10}{13}-\dfrac{1}{13}\right)^2= \left(-\dfrac{10}{13}-\dfrac{1}{13}\right)^2= \left(\dfrac{-11}{13}\right)^2= \dfrac{121}{169}\)