• ToRadicals[expr] attempts to express all Root objects in expr in terms of radicals.
can always give expressions in terms of radicals when the highest degree of the polynomial that appears in any Root
object is four.
• There are some cases in which expressions involving radicals can in principle be given, but ToRadicals cannot find them.
• If Root
objects in expr
contain parameters, ToRadicals[expr]
may yield a result that is not equal to expr
for all values of the parameters.
• New in Version 3.