document.write( "Question 590094: find the determinant of
\n" );
document.write( " 1 2 3
\n" );
document.write( " 4 5 6
\n" );
document.write( " 2 0 1 \n" );
document.write( "
Algebra.Com's Answer #375018 by richard1234(7193)![]() ![]() You can put this solution on YOUR website! The determinant is equal to\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "det A - 2 det B + 3 det C\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "where A, B, and C are the 2x2 matrices that do not have any element in the same row or column as the 1, 2, 3 in the top row respectively. Recall that the determinant of the matrix\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "|a b| \n" ); document.write( "|c d|\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "is ad - bc. \n" ); document.write( " |