Algebra Examples

$i^{87}$

Step 1

Rewrite $i^{87}$ as ${(i^{4})}^{21} (i^{2} \cdot i)$ .

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Step 1.1

Factor out $i^{84}$ .

$i^{84} i^{3}$

Step 1.2

Rewrite $i^{84}$ as ${(i^{4})}^{21}$ .

${(i^{4})}^{21} i^{3}$

Step 1.3

Factor out $i^{2}$ .

${(i^{4})}^{21} (i^{2} \cdot i)$

${(i^{4})}^{21} (i^{2} \cdot i)$

Step 2

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

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Step 2.1

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

${({(i^{2})}^{2})}^{21} (i^{2} \cdot i)$

Step 2.2

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

${({(- 1)}^{2})}^{21} (i^{2} \cdot i)$

Step 2.3

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

$1^{21} (i^{2} \cdot i)$

$1^{21} (i^{2} \cdot i)$

Step 3

One to any power is one.

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

Step 4

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

$i^{2} \cdot i$

Step 5

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

$- 1 \cdot i$

Step 6

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

$- i$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$