#### chwala

Gold Member

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**1. The problem statement, all variables and given/known data**

Given ## x^4+x^3+Ax^2+4x-2=0## and giben that the roots are ## 1/Φ, 1/Ψ, 1/ξ ,1/φ##

find A

**2. Relevant equations**

**3. The attempt at a solution**

## (x-a)(x-b)(x-c)(x-d)=0## where a,b,c and d are the roots

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