(2n+7)(n+1)(n-1). So the first one.
Hi! The answer would be D. It is basically just asking for a whole number. 2.6 is a decimal, C is negative and a decimal. Hope this helped!
Answer:
(x -3)(x² +3x +9)
Step-by-step explanation:
The sum of cubes is factored as ...
... a³ + b³ = (a +b)(a² -ab +b²)
For a=x, b=-3, this is ...
... x³ -27 = (x -3)(x² +3x +9)