Question

Can Anyone help me with this and show your work please!

-2x² - 5x
X = -4

Answer 1

-2(-4)^2 - (5)(-4)

-2(-16) -( -20)

-32 +20

-12

Explanation:

Answer 2

-12

Explanation:

In this exercise, we have the following expression:

`-2x^2-5x`

So our goal is to plug in
`x=-4` and find the output. To do so, let's rewrite the expression as a function of
`x`. So, we can write:

`f(x)=-2x^2-5x`

Then this is a quadratic function whose graph represents a parabola.

If
`x=-4`, we will find the output
`f(-4)`, so:

`f(-4)=-2(-4)^2-5(-4) \\ \\ f(-4)=-2(16)+20 \\ \\ f(-4)=-32+20 \\ \\ \boxed{f(-4)=-12}`

So the correct answer is -12