Algebra 6
2 marks · NormalSimplify the following expression, writing your answer as a power of only:
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a^{9/2}
Also accept: a^{4.5}; a^4.5
Common mistakes: Multiplying instead of adding powers; Incorrect sign for negative indices
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Marking points
M1 · 1 mark · Adds exponents correctly: 5/2 - (-2) = 5/2 + 2.
A1 · 1 mark · Arrives at final answer a^{9/2}.
Worked solution
When dividing powers with the same base, subtract the exponents: