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SAT I 一日一问:2014年3月18日

2014-03-18 10:00
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The correct answer is E

Explanation

When 3 is subtracted from x, the result is x minus 3. The square root of this difference is . When 5 is added to , the final result is 9. This can be written as+5 = 9. Subtracting 5 from both sides gives the equation  = 4. Squaring both sides of this equation gives x minus 3 = 16, or x = 19.

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