c) - căn bậc hai 25^2/13- căn bậc hai 81/17+12/13+(-25/17).
Giải thích
c) −25213−8117+1213+−2517
=−2513−917+1213+−2517
=−2513+1213+−917−2517
=−1313+−3417=−1+−2=−3.
c) −25213−8117+1213+−2517
=−2513−917+1213+−2517
=−2513+1213+−917−2517
=−1313+−3417=−1+−2=−3.