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If |[2x,5] ,[8,x]|=|[6,-2], [7, 3]| , w...

If `|[2x,5] ,[8,x]|=|[6,-2], [7, 3]| , write the value of `xdot`

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Given,
`|[2x,5] ,[8,x]|=|[6,-2], [7, 3]|`
`=>2x^2-40=18+14`
`=>2x^2-40=32`
`=>2x^2=72`
`=>x^2=36`
`=>x=+-6`
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