Question

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

Answer 1

`x=\pm5`

Explanation:

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).