Determine whether each polynomial is a perfect square trinomial.x 2 + 18x + 81

Week 6 Thursday, September 29, 2016 11:13 AM If there is no EF inside conducting material, e-'s move randomly If field is present, e- force F=-eE imposes small drift on e-'s motion Zig-zag line represent motion of charge carrier in conductor ○ Avg speed: ○ Drift speed: (much smaller) ○ Current (I) is opp dir...