TS EAMCET · Maths · Binomial Theorem
If \((-c, c)\) is the set of all values of \(x\) for which the expansion of \((7-5 x)^{-2 / 3}\) is valid, then \(5 c+7=\)
- A \(0\)
- B \(12\)
- C \(41\)
- D \(14\)
Answer & Solution
Correct Answer
(D) \(14\)
Step-by-step Solution
Detailed explanation
\((7-5 x)^{\frac{-2}{3}}\) \[ =7^{\frac{-2}{3}}\left(1-\frac{5 x}{7}\right)^{-\frac{2}{3}} \] To make expansion valid…
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