Question

What are the zeros of f(x) = x^2-x-20

Answer 1

`\large\boxed{Zeroes: 5\:and\:-4}`

Explanation:

How to find the zeros of an equation?

To find the zeros of an equation, you'll need to factor it first.

To factor the expression
`f(x)=x^(2) -x-20}`, you'll need to think of two numbers
`x` and
`y` such that:

`\begin{cases} xy=-20\\x+y=-1 \end{cases}`

The numbers are
`5` and
`-4`. So, these are the zeros of the function
`f(x)=x^(2) -x-20`.