Simplify i^15

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Algebra

Simplify i^15

$i^{15}$

Rewrite $i^{15}$ as ${(i^{4})}^{3} (i^{2} \cdot i)$ .

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Factor out $i^{12}$ .

$i^{12} i^{3}$

Rewrite $i^{12}$ as ${(i^{4})}^{3}$ .

${(i^{4})}^{3} i^{3}$

Factor out $i^{2}$ .

${(i^{4})}^{3} (i^{2} \cdot i)$

Rewrite $i^{4}$ as $1$ .

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Rewrite $i^{4}$ as ${(i^{2})}^{2}$ .

${({(i^{2})}^{2})}^{3} (i^{2} \cdot i)$

Rewrite $i^{2}$ as $- 1$ .

${({(- 1)}^{2})}^{3} (i^{2} \cdot i)$

Raise $- 1$ to the power of $2$ .

$1^{3} (i^{2} \cdot i)$

One to any power is one.

$1 (i^{2} \cdot i)$

Multiply $i^{2} \cdot i$ by $1$ .

$i^{2} \cdot i$

Rewrite $i^{2}$ as $- 1$ .

$- 1 \cdot i$

Rewrite $- 1 i$ as $- i$ .

$- i$

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