Question:
The coefficient of x³² in the expansion of
(x⁴-1x³)¹5 is
The coefficient of x³² in the expansion of
(x⁴-1x³)¹5 is
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Always equate power of x with required power.
Updated On: Mar 18, 2026
- -15C₃
- 15C₄
- -15C₂
- 15C₅
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: General term: Tᵣ+₁ = ¹⁵Cᵣ(x⁴)¹⁵⁻ʳ(-(1)/(x³))ʳ
Step 2: Power of x: x⁶⁰⁻⁷ʳ
Step 3: 60-7r=32 r=4
Step 4: Coefficient: ¹⁵C₄(-1)⁴ = -15C₂
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