Explicație pas cu pas:
AB=radical [5-(-1)] la a 2a+[1-1]la a 2a
AB=radical[6 la a 2a+0]
AB =radical 36=6
BC=radical (2-5)la a 2a+(6-1)la a 2a
BC=radical(-3)la a 2a+5 la a 2a
BC=radical(9+25)=36 =6
AC=radical(2-(-1))la a 2a+(6-1) la a 2a
AC=radical 3 la a 2a+5 la a 2a
AC=radical 9+25=36=6