Question 390276
{{{w^4-18w^2-2=0}}}
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Let x = {{{w^2}}}
now, we can rewrite our equation as:
.
{{{x^2-18x-2=0}}}
applying the quadratic formula, we get:
x = {18.1104, -0.1104}
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since w^2 = x
w = {{{sqrt(x)}}}
x = {4.256}
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details of quadratic follows:
*[invoke quadratic "x", 1, -18, -2 ]