A-LevelMathematicsSeries9709/12 · Oct/Nov 2025 · Q23 Marks
Find the term independent of x in the expansion of (2x² - 3/x)⁶
- Find the term independent of x in the expansion of (2x² - 3/x)⁶[3]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2025). The mark or mark type is shown in brackets.
- [B1] Binomial coefficient (6 choose 2) or (6 choose 4) or 15 identified.
- [M1] Identifies relevant term for x^0, e.g., k(2x²)^2(-3/x)^4 or k(2x²)^4(-3/x)^2 (or with different values for k, and powers).
- [A1] 4860 (accept 4860x^0 or 4860/1)
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