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Square & cube roots
The inverse of squaring and cubing. What number, multiplied by itself, gives this?
Square & cube roots
A root is the inverse of a power. Pick a number and a power.
n4
42 = 16
which means √16 = 4
Reading roots
- √16 = 4 because 4 × 4 = 16.
- ∛27 = 3 because 3 × 3 × 3 = 27.
- Most roots aren't whole numbers. √2 is irrational.