[問題] 天山 3-34

[myron]

Q34:
What is the value of the integer n?
(1) n(n + 2) = 15
(2) (n + 2)n = 125

想確認一下,這題的答案
是(B)還是(C)
我覺得應該是(B)
可是解答卻是(C).

[JS]

Q34:
What is the value of the integer n?
(1) n(n + 2) = 15
(2) (n + 2)^n = 125

B