I know the answer because I searched it up but I don't know the steps. Anybody willing to help please? I have attached the image in case you can't understand what I wrote :)))

Find the variables.

[ −12 −w^2 [2k -81
2f 3 ] = -14 3

I know the answer because I searched it up but I don't know the steps. Anybody willing to help please? I have attached the image in case you can't understand wh class=

Answer :

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