1.

1 +(2^3)/(1!) x + (3^3)/(2!) x^2 + ....oo=

Answer»

`(x^3+6X^(2) -7x -1)e^(x)`
`(x^3+6x^(2) +7x -1)e^(x)`
`(x^3+7x^(2) -6x +1)e^(x)`
`(x^3+x^(2) -2x -1)e^(x)`

ANSWER :B


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