The Quadratic Formula is a mathematical expression used to solve quadratic equations such as (ax (squared) +bx+c=0. The origin of the quadratic formula begin in about 2000 BC among the Egyptians and Chinese.
At the end of the 16th Century the mathematical notation and symbolism was introduced by amateur-mathematician François Viète, in France. In 1637, when René Descartes published La Géométrie, modern Mathematics was born, and the quadratic formula has adopted the form we know today.
It seems there is a long history to it
for more info see
http://h2g2.com/approved_entry/A2982567
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