Middle term in the expansion of 1-3 x-3 x2-x36 isA- 10t hB- 4t hC- 3r dD- None of these

The correct option is A (1+3x+3x^2+x^3)^6=((1+x)^3)^6=(1+x)^18 Hence the middle term is 10^th. ...

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Middle Terms

Middle term i...

Question

Middle term in the expansion of $(1 + 3 x + 3 x^{2} + x^{3})^{6}$ is

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None of these

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Solution

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Middle term in the expansion of $(1 + 3 x + 3 x^{2} + x^{3})^{6}$ is

(1 - 3 x + 3 x^{2} - x^{3})^{6}

{(\frac{2 x^{2}}{3} + \frac{3}{2 x^{2}})}^{10}

{(1 + 3 x + 3 x^{2} + x^{3})}^{6}

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