# How do you simplify -(2.57)^0?

Exponentiation take precedence here, so $- {\left(2.57\right)}^{0} = - 1$
In general ${x}^{0} = 1$ for all $x \ne 0$.
The case of ${0}^{0}$ is debated, with some people saying ${0}^{0} = 1$ and others saying that it is undefined.