Question

Solve for x:

           

Solution

Correct option is

– 11/97

Subtracting twice the first row from the third row, we have

 

             

Now subtracting 3/2 times the first row from the second row, we have

             

Now adding 4 times the first column to the second column, we have

             

Expanding along the third row, we have

             

                = – 33x – 3 – 64x – 8 = – 97x – 11

The given equation now becomes – 97x – 11 = 0 or x = – 11/97

SIMILAR QUESTIONS

Q1

The largest value of a third order determinant whose elements are 0 or 1, is

Q2

                            

Q4

If ab and c are pth, qth and rth terms of an H.P.,

                           

Q5

                        

Q6

then n equals

 

 

Q7

  

Q8

 

Q9