document.write( "Question 1001640: Let \r
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Algebra.Com's Answer #618739 by Edwin McCravy(20060) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "1. Find the determinant of the matrix: (3)(6)-(-1)(8) = 18+8 = 26\r\n" );
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document.write( "2. Swap the upper left and lower right elements:\r\n" );
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document.write( "3. Change the signs of the other two elements (upper right\r\n" );
document.write( "   and lower left:\r\n" );
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document.write( "4. Divide every element by the number obtained in step 1.\r\n" );
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document.write( "Reduce the reducible fractions:\r\n" );
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document.write( "The above method only works for finding the inverse of\r\n" );
document.write( "2x2 matrices.\r\n" );
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document.write( "Edwin

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