Author note — to cover (Higher)

Higher only. Evaluating a to the m/n as nth root first then mth power, e.g. 27 to the 2/3 is 9, with bases that are perfect powers; converting between root and index notation both ways. Negative fractional indices follow on the sibling page; Foundation stops at integer indices. (N7)

Introduction

—coming soon—

Practice and continue

Practice

Fractional indices

The index m over n as a root and a power, and which one to take first.

Next lesson

Negative fractional indices

Combining reciprocal, root and power in the order that keeps numbers small.