Take a pic with phone and it will give u answer
Answer:
A. n = 5
Step-by-step explanation:
S = n² + n
When S = 30:
n² + n = 30
Subtract 30 from both sides: n² + n - 30 = 0
Factorize: (n - 5)(n + 6) = 0
Therefore n = 5 or -6
As n > 2, then n = 5 only
A is not commutative with the above expression
your answer is A
Ok so the answer is super simple, its A
5+0=5 is the property of zero
The property of zero is when u add 0 to n so that n stays n
