VTMO 2026 - Grade 8 - Semifinal - SET 1 - Self-study Question 21

Question 21

1. $27x^3-\frac18$
2. $27x^3-\frac{27}2x^2-\frac94x+\frac18$
3. $27x^3-\frac{27}2x^2+\frac94x-\frac18$
4. $27x^3-\frac92x^2+\frac92x-\frac18$
5. $9x^3-\frac9x x^2+\frac94x-\frac18$