SAT数学Problem Solving练习题(15)

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摘要:下面是小站SAT频道为大家整理了SAT数学Problem Solving练习题(15),供考生们参考,以下是详细内容。

以下是小站SAT频道为大家整理了SAT数学Problem Solving练习题(15),供考生们参考,以下是详细内容。


Question 15: For any a≠1, (a4 - 1) / (a - 1) =

(a) a3 + a2 + a

(b) a3 + a2 + a + 1

(c) a2 + a + 1

(d) 1

(e) a + 1

Answer: A first inspection of the choices eliminates the c, d and e answers since the answer should be a polynomial with a degree of 4 - 1 = 3.

The correct answer is b.



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