(2x-3)2-8x+12 Share with your friends Share 1 Benedict Florance answered this =(2x)^2+3^2- 2*2x*3-8x+12=4x^2 +9-12x-8x+12= 4x^2-20x+21=(2x-3)(2x-7) 3 View Full Answer Debasmita Das answered this here's a shorter n probably easier method :-(2x-3)2-8x+12 =>(2x-3).(2x-3) -4(2x -3) =>(2x -3 -4) . (2x -3) =>(2x -7) . (2x -3) =>4x2 +20x +21 0