Exponent

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If the exponent n is a natural number, this indicates how many times the base a is multiplied by itself

You can write a power as a normal multiplication

3² = 3 × 3 = 9

The standard calculation rules apply

With digits you get

2³ × 3² = 8 × 9 = 72

When multiplying with the same base, you must add the exponents

3² × 3³ = 3²⁺³ = 3⁵

what you can easily check

3² × 3³ = 3 · 3 × 3 · 3 · 3 = 3 · 3 · 3 · 3 · 3 = 3⁵