大象传媒

Laws of indices - OCRRaising a power to a power

An index, or power, is the small floating number that appears after a number or letter. Indices show how many times a number or letter has been multiplied by itself.

Part of MathsNumber

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 \(k^6\).

Example

\((p^4)^3 = p^{4脳3} = p^{12}\)

Example - Higher

Simplify \((2p^4)^3\)

Deal with the number and the letter separately.

\((2)^3 = 8\)

\((p^4)^3 = p^{4脳3} = p^{12}\)

So \((2p^4)^3 = 8p^{12}\)