SAT官方每日一題 6月12日
SAT試題類型 Mathematics Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
If square root = square root , which of the following must be true?
Answer Choices
a = 0
b = 0
a + b = 0
a minus b = 0
+ = 0
答案:B
解析:
Explanation
Squaring both sides of the equation square root = square root gives the equation x minus a = x + b. Subtracting x from both sides now gives negative a = b, or a + b = 0
