How to solve Quadratic Equations on a Casio Calculator (FX-85GT Plus) - YouTube
COVID Lockdown got me so bored - found a cheap fx85GTX on ebay and murdered out my fx991EX to put a little swagger in my maths. ( •_•)>⌐□-□ : r/calculators
Essential Beginner Tutorial for a Casio Calculator (fx85GTPLUS)