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If A= [ array cc x-2 & x+2 -2 & 1 array ] is a singular matrix, then possible value of x is

Options

  1. A2
  2. B-2
  3. C3 2
  4. D-3 2

Correct answer

D. -3 2

Step-by-step solution

aligned & |A|=0 [ matrix is singular ] & |A|=(x-2) 1-(-2)(x+2)=0 & x-2+2 x+4=0 3 x+2=0 & x=- 3 2 aligned

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