document.write( "Question 591658: Find the determinant of this 3x3 matrix using expansion by minors about the second row\r
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document.write( " 0 -4 6
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document.write( "A= 5 0 0
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document.write( " 9 -2 7 \n" );
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Algebra.Com's Answer #375692 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Find the determinant of this 3x3 matrix using expansion by minors about the second row\r \n" ); document.write( "\n" ); document.write( " 0 -4 6 \n" ); document.write( "A= 5 0 0 \n" ); document.write( " 9 -2 7 \n" ); document.write( "============ \n" ); document.write( "= -5*(-4*7 - (-2*6)) = -5*(-28 + 12) = 80 (the other minors are zeroes) \n" ); document.write( " \n" ); document.write( " |