Question 236542
w^4-18w^2-2=0
{{{w = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
w=(18+-sqrt[-18^2-4*1*-2])/2*1
w=(18+-sqrt[324+8])/2
w=(18+-sqrt332)/2
w=(18+-18.22)/2
w=36.22)/2
w=18.11 ans.
w=(18-18.22)/2
w=-.22/2
w=-.11 ans.