Question

If `f(x) = x(2x-1)`, what is `f(-2)`?

Answer 1

`f(-2)=10`

Explanation:

Plug in `x=-2` in the equation to get `f(-2)`.

`f(x)=x(2x-1)`

`f(-2)=-2(2*-2-1)`

`f(-2)=-2(-4-1)`

`f(-2)=-2*-5`

`f(-2)=10`