what is the quadratic formula?

Look at this - it will help you remember the quadratic formula!    

https://www.youtube.com/watch?v=O8ezDEk3qCg

$$\[\huge a^2 + b^2 = c^2\]$$

Everyone knows that.

-b±√(b²-4ac)

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         2a

$$\[\huge a^2 + b^2 = c^2\]$$

Everyone knows that.

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Apparently, "everyone" doesn't include  Mr. Pythagoras - (AKA, Anonymous No. 1)

Are you psychic or something? How’d you know my name? It’s hyphenated, and I spell it with an “i” and a “y” Pithy-Agoras? My friend’s name is Archie Medes. He’s kind of screwy. My other friend is Rene Horas Descartes. Everyone makes fun of his name. Not because he a guy named Rene, but because he has Horas before Descartes. I don’t get it though.

Very pithy word-play, "Pi" thag !!!