Question

What is the value of -3x^2 - 2x -9 when x= -2

Answer 1

Answer:

-17

Step-by-step explanation:

Hi there!

$-3x^2 - 2x -9$

Replace x with -2:

$=-3(-2)^2 - 2(-2) -9\\=-3(4) - (-4) -9\\=-12 +4-9\\= -17$

I hope this helps!

Answer 2

Answer:

-17

Step-by-step explanation:

given:

-3x^2 - 2x -9 when x= -2

rewriting so it's easier to view:

$-3x^2 - 2x -9$

substituting:

$-3(-2)^2 - 2(-2) -9$

simplifying step-by-step:

$-3(4) - 2(-2) -9$

$-12 - 2(-2) -9$

$-12 +4 -9$

$-8-9$

-17

Hope this helps, have a nice day! :D