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Solvability by radicals
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Mathematics
Area of mathematics
Algebra
Galois theory
Created
2026-09-24
Updated
2026-09-24
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A
polynomial
is solvable by radicals when its
roots
lie in
a
tower obtained by adjoining successive
roots
; equivalently, its
Galois group
is solvable.
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(5)
Galois theory
Algebra
Area of mathematics
Mathematics
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Past exam of the mathematics course of the University of Cambridge
/
2020
/
ii
/
Paper 2
/
18G
/
d
/
Solution
Radical extension
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