Precalculus Examples

${(i)}^{- 22}$

Step 1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{1}{i^{22}}$

Step 2

Simplify the denominator.

Tap for more steps...

Step 2.1

Rewrite $i^{22}$ as ${(i^{4})}^{5} i^{2}$ .

Tap for more steps...

Step 2.1.1

Factor out $i^{20}$ .

$\frac{1}{i^{20} i^{2}}$

Step 2.1.2

Rewrite $i^{20}$ as ${(i^{4})}^{5}$ .

$\frac{1}{{(i^{4})}^{5} i^{2}}$

Step 2.2

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

Tap for more steps...

Step 2.2.1

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

$\frac{1}{{({(i^{2})}^{2})}^{5} i^{2}}$

Step 2.2.2

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

$\frac{1}{{({(- 1)}^{2})}^{5} i^{2}}$

Step 2.2.3

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

$\frac{1}{1^{5} i^{2}}$

Step 2.3

One to any power is one.

$\frac{1}{1 i^{2}}$

Step 2.4

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

$\frac{1}{i^{2}}$

Step 2.5

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

$\frac{1}{- 1}$

Step 3

Divide $1$ by $- 1$ .

$- 1$