UPSC NDA 2 2016 Mathematics Solved Paper

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Consider the following for the next two (02) items that follow:
Let
ax3+bx2+cx+d=|
x+12x3x
2x+3x+1x
2−x3x+45x−1
|
then
[NDA II 2016]
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What is the value of a+b+c+d?
[NDA II 2016]
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