Question

What is the value of the expression when n = 3?
-2n(5 + n - 8 - 3n)

Answer 1

54

Explanation:

Substitute for n:

`- 6(5 + 3 - 8 - 9)`

Simplify:

`- 6( - 9) = 54`

Answer 2

Hello!

Answer:

`\Large \boxed{\sf 54}`

Explanation:

→ We want the value of this expression when n = 3:

`\sf -2n(5 + n - 8 - 3n)`

→ Let's replace n by 3:

`\sf (-2* 3) *(5 + 3 - 8 - 3 * 3 )`

→ Let's simplify the expression:

`\sf (-6) * (5 + 3 - 8 - 9 )`

`\sf (-6) *(-9 )`

`\sf 6 *9`

`\boxed{\sf 54}`

Conclusion:

When n = 3, the expression -2n(5 + n - 8 - 3n) is equal to 54.