(main)[3]
Determine the coefficient of $x^3$ in the expansion of $(2 - \tfrac{1}{2}x)^7$.
Mathematics 9709 · AS & A Level · Series
Series — practice question
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Applies the laws of indices correctly when combining $7C3 \times 2^4 \times \left(\frac{x}{2}\right)^3$” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI