# How do you find all zeros of f(x)=x^2-25?

Mar 13, 2017

$x = \setminus \pm 5$
We find the zeros by setting the function equal to zero, or $f \left(x\right) = 0$.
$0 = {x}^{2} - 25$
$25 = {x}^{2}$
$\setminus \pm 5 = x$, because we are taking the root of the number (there is a positive and negative solution).