Rewrite the expression using the negative exponent rule .

Rewrite as .

Factor out .

Rewrite as .

Factor out .

Rewrite as .

Rewrite as .

Rewrite as .

Raise to the power of .

One to any power is one.

Multiply by .

Rewrite as .

Rewrite as .

Rewrite as .

Move the negative in front of the fraction.

Simplify i^-19