Most recent change of QuinticEquation

Edit made on February 15, 2009 by GarethMcCaughan at 00:30:21

Deleted text in red / Inserted text in green

An equation of the form EQN:ax^5+bx^4+cx^3+dx^2+ex+f=0

It is well know known that the quadratic equation has a closed form solution.
It is less well known that the cubic equation and quartic equation also
both have closed form solutions, although they are significantly more

For centuries a general solution for the quintic (and higher) equation
was sought, but in 1824 Abel proved that such a formula (using radicals)
is impossible, and this was generalised and extended by Galois's work of
1832 or so.