MathCheck Equation Problem 2 / 8

Solve `frac(mu^4 + mu^3 - mu^2)(mu^2 + 3mu) = 0`. equation mu = (-1+sqrt(5))/2 \/ mu = (-1-sqrt(5))/2 ends f_nodes 19 (mu^4 + mu^3 - mu^2)/(mu^2 + 3mu) = 0 /**/

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