2016年12月16日SAT官方每日一题
SAT官方每日一题是College Board官网每天放出的一道SAT训练题目,可以帮助大家更好的了解和适应SAT考试,下面是今天的SAT官方每日一题内容:
2016年12月16日SAT官方每日一题
Mathematics>Standard Multiple Choice
Read the following SAT test question and thenclick on a button to select your answer.
11-x=√(11-x)
Which of the following are the solutions to the aboveequation?
A.x=0 and x=1
B.x=10 and x=11
C.x=11 and x=12
D.x=1 and x=10
答案:B
解析:
Choice B is correct. Solve the equation by squaring both sides to eliminate the radical.
(11-x)2=(√11-x)2
x2-21x+110=0
The solutions to the equation are x=10 and x=11.
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最后更新:2017-01-01 16:49:28