Question

find the coeficient of x^2 in (3x+x^3)(x+1/x)​

Answer 1

Answer:

Coefficient of x² is 1

Since: (3x+x³)(x+1/x)

(3x²+3x+x⁴+x³)/x

X(3x+3+x³+x²)/x

3x+3+x³+x²

X³+x²+3x+3

Cofficient of x² is

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