document.write( "Question 459225: Please help me solve this 4x4 matrix using cramer's rule
\n" ); document.write( "-x1-4x2+2x3+x4=-32
\n" ); document.write( "2x1-x2+7x3+9x4=14
\n" ); document.write( "-x1+x2+3x3+x4=11
\n" ); document.write( "x1-2x2+x3-4x4=-4
\n" ); document.write( "

Algebra.Com's Answer #314962 by Edwin McCravy(20060)\"\" \"About 
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Please help me solve this 4x4 matrix using cramer's rule
\n" ); document.write( "-x1-4x2+2x3+ x4=-32
\n" ); document.write( "2x1- x2+7x3+9x4= 14
\n" ); document.write( "-x1+ x2+3x3+ x4= 11
\n" ); document.write( " x1-2x2+ x3-4x4= -4\r
\n" ); document.write( "\n" ); document.write( "That is a system of equations, not a matrix.
\n" ); document.write( "Also, Cramer's rule involves determinants,
\n" ); document.write( "not matrices. To solve this by hand using
\n" ); document.write( "Cramer's rule with five 4x4 determinants would
\n" ); document.write( "take hours.\r
\n" ); document.write( "\n" ); document.write( "Here's the solution: x1=5, x2=8, x3=3, x4=-1\r
\n" ); document.write( "\n" ); document.write( "Tell us what way you're supposed to solve it
\n" ); document.write( "and we'll help you. Did you mean Gaussian
\n" ); document.write( "elimination? \r
\n" ); document.write( "\n" ); document.write( "Edwin
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