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The term independent of x in the expansion of (x² + x + 1 + 1/x)⁵ is equal to:
- 98
- 99
- 100
- 101
Correct answer: 101
Solution
Rewriting: (x²+x+1+1/x)⁵ = x^(-5)*(x³+x²+x+1)⁵. The term independent of x requires the x⁵ coefficient in (x³+x²+x+1)⁵.
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