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If the sum of the coefficients in the expansion of (x^2 + 2/x^3)^n is 243, then the term independent of x is equal to

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If the sum of the coefficients in the expansion of (x2 + 2/x3)n is 243, then the term independent of x is equal to

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1 Answer

+2 votes
by (2.1k points)

so answer is option D 40

by (10 points)
Why you put x=1
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