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TS EAMCET · Maths · Binomial Theorem

The sixth term in the expansion of \(\left(3-\sqrt{\frac{17}{4}+3 \sqrt{2}}\right)^{10}\) is a

  1. A positive rational number
  2. B negative rational number
  3. C positive irrational number
  4. D negative irrational number
Verified Solution

Answer & Solution

Correct Answer

(D) negative irrational number

Step-by-step Solution

Detailed explanation

We have, \[ \left(3-\sqrt{\frac{17}{4}+3 \sqrt{2}}\right)^{20} \Rightarrow T_6=-{ }^{20} C_5(3)^5\left(\frac{17}{4}+3 \sqrt{2}\right)^{5 / 2} \] \(\therefore \mathrm{r}_6=\) negative irrational number