Problem

Problem

The values of xx for which the given matrix [xx22x−xx−2−x]\begin{bmatrix} x & x & 2 \\ 2 & x & -x \\ x & -2 & -x \end{bmatrix} is singular are a. −2≤x≤2-2 \le x \le 2 b. for all xx other than 2 and −2-2 c. x≥2x \ge 2 d. x≤−2x \le -2

Browse the problem library