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binomial coefficients in binomial expansion

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Find the constant term in the expansion of (1/(2x^3) + x)^20.

[The constant term is the summand which does not involve any
power of x. For example the constant term in 3x^2− 4x + 23 +9x^10 + 5/(3x^6) is 23.]

[Note on notation: 2^3 means '2 to the power of 3', so 2^3 = 8]

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Solution Summary

The solution requires the expansion of the expression using the well known binomial theorem!.

Expansion is done and coeeficients are compared.

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