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AP EAMCET202317 May 2023Morning ShiftMathematicsMatricesActual

If [ array lll x & 4-1 array ] [ array lll 2 & 1 & 0 1 & 0 & 2 0 & 2 & 4 array ] [ array c x 4 -1 array ]=0 , then x=

Options

  1. A-1+ 6
  2. B8 5
  3. C-2 10
  4. D3 6

Correct answer

C. -2 10

Step-by-step solution

aligned & (c) [ array lll x & 4 & -1 array ] [ array lll 2 & 1 & 0 1 & 0 & 2 0 & 2 & 4 array ] [ array c x 4 -1 array ]=0 & [ array lll 2 x+4 & x-2 & 4 array ] [ array c x 4 -1 array ]=0 & x(2 x+4)+4(x-2)-4=0 & 2 x^2+4 x+4 x-8-4=0 & 2 x^2+8 x-12=0 x^2+4 x-6=0 & x= -4 16+24 2 = -4 2 10 2 & x=-2 10 aligned

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