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Without expanding a determinant at any s...

Without expanding a determinant at any stage, show that |`|x^2+x ,x+1 , x+2|,|, 2x^2+3x-1, 3x , 3x-3 | , | x^2+2x+3, 2x-1 ,2x-1||=x A+B ,w h e r eAa n dB` are determinant of order 3 not involving `xdot`

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