Question 460191
{{{w^4-18w^2-2=0}}}
Sub x for w^2
{{{x^2 - 18x - 2 = 0}}}
*[invoke solve_quadratic_equation 1,-18,-2]
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Sub back.
w^2 = 9 + sqrt(58)
w = +4.076
w = -4.076
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w^2 = 9 - sqrt(58)
w = =1.7615
w = -1.1765