问题
单项选择题
Which of the following is equal to x24 for all positive values of x （）.
A. x12+x12
B. (-x12)-2
C. (x6)6
D. (x2)(x3)(x4)
E. (x72)1/3
答案
参考答案：E
解析：
When exponents are raised to another power, you multiply the exponents together; of the answer choices, E is the only answer that corresponds to x24.