If vmatrix x^2+3x & x-1 & x+3 x+1 & -2x & x-4 x-3 & x+4 & 3x vmatrix =ax^4+bx^3+cx^2+dx+e, then what is the value of e?

NDA 2023 Mathematics question

=+++dx+e,

then what is the value of ?

Answer: (B)

The constant term is obtained by putting on both sides: . This

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Question ID VK-029666