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If the system of equations aligned & x+y+z=6 & x+2 y+3 z=10 & x+2 y+ z=0 aligned has a unique solution, then is not equal to

Options

  1. A1
  2. B0
  3. C2
  4. D3

Correct answer

D. 3

Step-by-step solution

Given system of equations is aligned & x+y+z=6 & x+2 y+3 z=10 & x+2 y+ z=0 aligned It has unique solution. aligned & | array lll 1 & 1 & 1 1 & 2 & 3 1 & 2 & array | 0 & 1(2 -6)-1( -3)+1(2-2) 0 & 2 -6- +3 0 -3 0 3 aligned

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