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Find all values of x so that rank{4) = 2. (Enter your answers as a comma-separatad list. If all real numbers are solutions, enter REALS.)

Find all values of x so that rank{4) = 2. (Enter your answers as a comma-separatad list. If all real numbers are solutions, enter REALS.) -4 1 04 A=| 01 x 8 10 -31

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