The cofactors of the first-row entries are .
1.-407,-74,227
2.-407,-68,287
3.-393,-74,287
4.-393,-68,227
The cofactors of the second-row entries are .
1.-471,222,-91
2.-471,228,-71
3.-469,222,-91
4.-469,228,-71
The cofactors of the third-row entries are .
1.249,-222,349
2.249,-217,-351
3.251,-222,349
4.251,-217,-351

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

1/2(2*4)=6 $$- agahajakanajak

multiply each one by 3.14

step-by-step explanation:

130 degrees. i have no other way to explain