Find the indicated series by the given operation.Find the first three terms of the expansion for  by multiplying the proper expansions together, term by term.

A. x - x2 +  x3 - . . .
B. -x + x2 -  x3 + . . .
C. 1 - x + x2 - . . .
D. x + x2 -  x3 + . . .

Answer: B

Mathematics

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