Edexcel IGCSE Math A 1.4.C index notation and laws with powers

Practise index-law questions by combining same-base powers, using zero or negative indices and rewriting expressions as one power.

Exam points

Combine powers with the same base to find an unknown index such as n or k.
Use zero and negative powers correctly in expressions such as 5^0 or 8^-2.
Rewrite products, quotients and square-root powers as one power of a given base.

[Maximum number: 1]

Write $7 \times 7 \times 7 \times 7 \times 7 \div 7$ as a single power of 7

Final answer:
$7^{4}$

Since five factors of 7 divided by one factor of 7 leaves four factors of 7.

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