Laws of indices - EdexcelRaising a power to a power

Indices are used to show numbers that have been multiplied by themselves. They can be used instead of the roots such as the square root. The rules make complex calculations that involve powers easier.

Part ofMathsNumber

Raising a power to a power

Example

\((k^3)^2\).

This means that \(k^3\) is to be squared, or multiplied by \(k^3\) again: \((k^3)^2 = k^3 \times k^3\)

Add the powers together, so \((k^3)^2 = k^3 \times k^3 = k^6\), so \((k^3)^2\) can be simplified to \(k^6\).

Letters or numbers to the power of zero

Dividing indices

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