`5x^2-20`

We can take 5 out.`5(x^2-4)`

We can rewrite this as,

`5(x-2)(x+2)`

**Therefore there are 3 factors. 5, (x-2) and (x+2).**

**The answer is B.**

`5x^2-20`

We can take 5 out.

`5(x^2-4)`

We can rewrite this as,

`5(x-2)(x+2)`

**Therefore there are 3 factors. 5, (x-2) and (x+2).**

**The answer is B.**