Respuesta :

Space

Answer:

-n⁴ + 4n

Step-by-step explanation:

Step 1: Write expression

(3n⁴ + 6n + 6n) - (n + 4n⁴ + 7n)

Step 2: Combine like terms

3n⁴ + 12n - (4n⁴ + 8n)

Step 3: Distribute -1

3n⁴ + 12n - 4n⁴ - 8n

Step 4: Combine like terms

-n⁴ + 4n
3n4+12n-n-4n4-7n
3n4-4n4=-1n4
12n-7n-n=4n
The answer will be
-1n4+4n