I usually randomize coefficients and constants for the factored form (i.e. a, b, c, d in (ax+b)(cx+d)). Then, calculate those for expanded form (i.e. A=ac, B=ad+bc, and C=bd). From that use Ax+By+C for displaying the problem.
You’ll need to do something similar to eq4 and eq5 in the note CL for Ax^2 to deal with a coefficient of 1 or -1.
Also you can move the graph below the other components to make it one column, and then there won’t be a blank half of the slide.
I pretty much rewrote it. Graphs can be nice because calculations can get hairy in the CL. I kind of rushed it, so I may have missed something, but wanted to get it out there.