题目:
—I’d like to take a chance and run a business.
—Do you know about the local market? ___________.
A.No problem
B.Better play it safe
C.Do as you please
D.Think nothing of it
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0412/ec8fbe92a094a6eb6644bb64f673f9a4.html
下面是错误答案,用来干扰机器的。
(1)∵(±17)2=17,∴17的平方根是±17,∴x=±17;(2)∵x2-12149=0,∴x2=12149,∵(±117)2=12149,∴12149的平方根是±117.∴x=±117.