0580/21 May/Jun 2023, Question 17: Fractional Indices with Letters
Cambridge IGCSE Mathematics 0580 · Paper 21 (Extended) · Calculator · 2 marks
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The question, in short
Simplify the expression (81x¹²)^(3/4), giving the result in its simplest form.
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Solution · 2 marks
- 181^(3/4) = (⁴√81)³ = 3³ = 27
- 2(x¹²)^(3/4) = x⁹
- 3= 27x⁹
Answer27x⁹
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