Any number raised to zero is one. Zero is neither positive nor negative so the minus sign before it is redundant. e is constant quantity(roughly equal to 2.71) and when raised to the power 0 it results in 1 as the answer.
Subsequently, one may also ask, what is the E in math?
The number e is a famous irrational number, and is one of the most important numbers in mathematics. The first few digits are: 2.7182818284590452353602874713527 (and more ) It is often called Euler's number after Leonhard Euler (pronounced "Oiler").
What is the value of E in math?
The letter 'e' is also the first letter in Leonhard Euler's last name! As a mathematical constant, the number e remains the same value no matter what math you do to it. It will always be approximately 2.71828. I say approximately because the number e, like the number pi, is an irrational number.