0580/21 Oct/Nov 2022, Question 10: Index Laws with Letters
Cambridge IGCSE Mathematics 0580 · Paper 21 (Extended) · Calculator · 2 marks
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The question, in short
Simplify the expression 18x¹⁸ ÷ 9x⁹, giving the result in its simplest form.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 118 ÷ 9 = 2
- 2x¹⁸ ÷ x⁹ = x¹⁸⁻⁹ = x⁹
- 3= 2x⁹
Answer2x⁹
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