Jee Main 2025 — Medium JEE math MCQ
If in the expansion of \((1 + x)^p(1 - x)^q\), the coefficients of \(x\) and \(x^2\) are 1 and -2, respectively, then \(p^2 + q^2\) is equal to
- A. 18
- B. 13
- C. 8
- D. 20
Solution
The correct option is **B**. (B. 13)
MATH
medium • PYQ Reworded
Question
Read carefully, then pick the best option.
If in the expansion of , the coefficients of and are 1 and -2, respectively, then is equal to
AI hints
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