What is the value of the integer n?
(1) n(n + 2) = 15
(2) (n + 2)n = 125
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
请教思路 答案应该是B 但如果比较正规推出B
谢谢 | 
