8.
x + 3
(x – 4)(x – 4)
x - 4

8x + 3x (x - 4)² x - 4

Step-by-step explanation:

Use Product rule: xᵃ xᵇ = x ᵃ⁺ᵇ

8x + 3 (x - 4)² x - 4

Regroup Terms

8x + 3x (x - 4)² x - 4

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18