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Quandaries & Queries
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 Topic: quintic
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 Fourth and fifth degree polynomials 2009-08-20 From Evin:hello.i am a student . ax^4+bx^3+cx^2+dx+e=0 x=? i want to learn the solution or formula of equations of the fourth and fifth degree...PLEASEAnswered by Robert Dawson. Quadratics and quintics 2006-07-18 From Lynne:What is wrong with this statement? "The quintic is one step up from the dread quadratic equation." (Newsweek, Dec. 19, 2005)Answered by Stephen La Rocque. The inverse of a quintic function 2004-07-22 From A student:I'm really having trouble finding out the inverse of this quintic equation. F(X)= X5+3X3+1.I know that this quintic has an inverse because it is one to one. But I can't find a method to solve this. Finding the inverse of a quadratic or a cubic equation is a lot easier, but with this quintc I am really lost. I even know how the graph of this equation and its inverse looks like, but I'm not sure if Iam getting the right equation. Please help me out.Answered by Penny Nom. Polynomials degree 4 and bigger 2003-06-26 From Stephen: How do I show kids how to find all the zeros for polynomials degree 4 and bigger. For examples: r(x) = x5-11x3-7x2+77 = (x2-11)(x3-7) and s(x) = x4-121 = (x2-11)(x2+11) Also am I correct when I say that the following are irreducible? f(x) = x2-11 g(x) = x3-7 h(x) = x4-5 Answered by Harley Weston.

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