HP 48GX Scientific Expandable Calculator. Solve your math and science problems in a jiffy with the HP 48GX compact calculator. This HP calculator has a built-in equation library with over 300 formulas that make calculations easy. Furthermore, the HP 48GX calculator supports a printer connection that allows you to take instant printouts of the graphs and equations. The LCD display of this compact calculator allows you to preview the entered numbers, formulas, graphs and equations. Moreover, this calculator also displays 2-D and 3-D graphics clearly. Good working HP 48GX Expandable Scientific Calculator. The calculator passes self-test and works great with batteries included. Includes HP zipper case, Quick Reference Guide and Owner’s Manual.