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Paragraph: For the system of linear equations 2 x+3 y+5 z=9,7 x+3 y-2 z=8 and 2 x+3 y+ z= Question: Under what condition does the above system of equations have unique solutions?

Options

  1. A=5 and =9
  2. B9 and =7 only
  3. C5 and has any real value
  4. Dhas any real value and 9

Correct answer

C. 5 and has any real value

Step-by-step solution

For unique solution : aligned & |A| 0 2(3 +6)-3(7 +4)+5(21-6) 0 & 5 . aligned and can have any real value.

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