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

Question

5334 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-03-13T01:26:12

$x=\pm5$

We find the zeros by setting the function equal to zero, or $f(x)=0$ .

Then,
$0=x^2-25$
$25=x^2$
$\pm5=x$ , because we are taking the root of the number (there is a positive and negative solution).

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