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Forum: Abstract Algebra & Algebraic Number Theory 2018-11-24, 17:39
Replies: 6
Views: 3,507
Posted By carpetpool
Post I recall there being a cubic formula (its like...

I recall there being a cubic formula (its like the quadratic formula for solving quadratic equations except for cubic equations). One of the solutions is given by

x = l/l2

where

l = -(2 -...
Forum: Abstract Algebra & Algebraic Number Theory 2018-11-24, 03:47
Replies: 6
Views: 3,507
Posted By carpetpool
Post Trying to solve discriminant of a cubic polynomial by product method

If P(x) = x^2 + a*x + b is a monic quadratic polynomial with b = c*d and the discriminant D = a^2-4*b, then Q(x) = c*x^2 + a*x + d is the corresponding polynomial to P(x) with the same discriminant...
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