Question

HELP ASAP/NOW....NO JOKES OR LINKS!!!!!!

what is the vale of the expression -2x^2-4x+10 when x= -3

A. -20

B. 16

C. 40

D. 4

Answer 1

Let's find

• -2x²-4x+10
• -2(-3)²-4(-3)+10
• -2(9)+12+10
• -18+22
• 4

Answer 2

D. 4

Explanation:

Given expression:

`-2x^2-4x+10`

To find the value of the expression when x = -3, substitute x = -3 into the expression:

`\implies -2(-3)^2-(-3)x+10`

Apply exponent rule
`(-a)^2=a^2`:

`\implies -2(3^2)-4(-3)+10`

`\implies -2(9)-4(-3)+10`

`\implies -18-4(-3)+10`

Apply rule
`-(-a)=a` :

`\implies -18+(4)(3)+10`

`\implies -18+12+10`

Add/subtract from left to right:

`\implies -6+10`

`\implies 4`