课程咨询
美国本科留学资料领取

扫码添加助教

免费领取

备考资料大礼包

扫码关注公众号

新SAT数学练习题附答案解析(18)

2018-05-22 19:39:00来源:新东方在线论坛

  新SAT数学练习题解析

  5.Correct Answer: C

  Explanation:

  A perfect cube will have prime factors that are in groups of 3; for example 125 has the prime factors 5 x 5 x 5 , and 64 x 125 will also be a cube because its factors will be 4 x 4 x 4 x 5 x 5 x 5

  Consider the answer choices in turn.

  8 is the cube of 2, and p is a cube, and so the product will also be a cube.

  pq will also be a cube as shown above.

  pq is a cube and so is 27, but their sum need not be a cube. Consider the case where p =1 and q = 8, the sum of pq and 27 will be 35 which has factors 5 x 7 and is not a cube.

  -p will be a cube.

  Since the difference between p and q is raised to the power of 6, this expression will be a cube (with cube root = difference squared).

  

新东方SAT备考资料免费下载

  以上就是新东方在线SAT频道为你带来的新SAT数学练习题附答案解析,更多精彩敬请关注新东方在线SAT道。

SAT水平能力测试【0元免费测试】

美本留学资料大礼包

微信扫描二维码 回复【美本资料】

机考SATCB官方样题|可汗练习题|AP全科大纲/备考资料包

更多资料
更多>>
更多内容

添加美本助教号

自动领取备考资料大礼包

1. 打开手机微信【扫一扫】,识别上方二维码;
2.添加【美本助教】,自动领取留学备考资料大礼包。

可汗学院新SAT题目完整版

微信扫描下方二维码 即可获取

SAT1500分录播课(旗舰版+1对1) 托福精讲录播课(旗舰版) 托福8-10人直播VIP小班
更多>>
更多公开课>>

2023美本留学资料免费领取

微信添加美本助教

新东方美本助教
更多>>
更多资料

添加新东方在线美本助教号

自动领取备考资料大礼包

1. 打开手机微信【扫一扫】,识别上方二维码;
2.添加【Ella助教】,自动领取留学备考资料大礼包。