Simplify. (16a^20)^1/4
- (a)Simplify. (16a^20)^1/4[2]
- (b)Expand and simplify. (2c+9d)(4c-3d)[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2024). The mark or mark type is shown in brackets.
- [2] 8a^15 final answer
- [2] B1 for 8a^k or ka^15 as final answer, k ≠ 0
- [2] or for 8a^15 seen not as final answer
- [2] 8c² + 30cd - 27d² final answer
- [2] M1 for three terms correct from 8c² - 6cd + 36cd – 27d²
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