﹙3t+2﹚²=6t+4

﹙3t+2﹚²=6t+4
﹙3t+2﹚²=6t+4

﹙3t+2﹚²=6t+4
﹙3t+2﹚²=6t+4
9t²＋12t＋4=6t＋4
9t²＋6t=0
3t﹙3t＋2﹚=0
t=0,t=－2／3

﹙3t+2﹚²-2(3t+2)=0
3t+2=0或者3t+2=2
t=-2/3 t=0