Question

Evaluate 4x3 + 2 for x = -1

Answer 1

$4 {x}^{3} + 2$

Plug in -1 for x

and you'll get this:
$4 {( - 1)}^{3} + 2$

Solve it further and you'll get:
$4( - 1) + 2 \\ = - 4 + 2 \\ = - 2$

Therefore,
$4 {x}^{3} + 2$
where x = -1

Answer 2

Substitute the value of the variable into the equation and simplify.

-2