This is a very powerful complex number program. It has many features. adds, subtracts, multiplies, divides, shows pictures of the operations, and much more.. please visit www.livingalgebra.com and www.livingcalculus.com for much more by Tom Owsiak, Atlanta, GA, 5/14/2013 http://www.youtube.com/watch?v=5jMrM6vlw6w subscribe to youtube.com/mathlessonsforfree