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绝对值   题数:17
If xy + k = k and x is not 0, which of the following must be true?
【OG20-P181-228题】How many of the integers that satisfy the inequality (x+2)(x+3)x−2 ≥0 are less than 5?
Right triangle PQR is to be constructed in the xy-plane so that the right angle is at P and is parallel to the x-axis. The x- and y-coordinates of P, Q, and R are to be integers that satisfy the inequalities-4 ≤ x≤ 5and 6≤y≤16. How many different triangles with these properties could be constructed?
If x < 0, then √(−x·|x|) ​ is
If x < 0, then √(−x)2 ​ is
If x < 0, then √(-x│x│) is
If n is a positive integer, which of the following is a possible value of |56 - 5n|?
√[2√63 + 2/(8+3√7)] =
If x ≠0, then √x2x ​
Which of the following describes all values of x for which 1−x2≥0 ​?
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