When solving an equation, Gabrielle's first step is shown below. Which property justifies Gabrielle's first step?
WILL GIVE BRAINLIEST

the answer is b i just did that

step-by-step explanation:

what's the question?

step-by-step explanation:

there is no question.

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function