If 5 and 7 are the roots of the equation `|{:(x,4,5),(7,x,7),(5,8,x):}
Channel: Doubtnut
Date: 02/02/2020

If 5 and 7 are the roots of the equation `|{:(x,4,5),(7,x,7),(5,8,x):}|=0`, then what is the third root ?