Evaluate -1/(-1^2+1)

$\frac{- 1}{- 1^{2} + 1}$

Simplify each term.

One to any power is one.

$\frac{- 1}{- 1 \cdot 1 + 1}$

Multiply $- 1$ by $1$ .

$\frac{- 1}{- 1 + 1}$

Add $- 1$ and $1$ .

$\frac{- 1}{0}$

The expression contains a division by $0$ . The expression is undefined.

Undefined