document.write( "Question 168902: x^2-4x+2=0 \n" ); document.write( "

Algebra.Com's Answer #124542 by jojo14344(1513) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%5E2-4x%2B2=0\"$
\n" ); document.write( "Remember ----> $\"system%28a=1%2Cb=-4%2Cc=2%29\"$
\n" ); document.write( "Via Pyth. Theorem:
\n" ); document.write( " $\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( " $\"x=%28-%28-4%29%2B-sqrt%28-4%5E2-4%2A1%2A2%29%29%2F%282%2A1%29\"$
\n" ); document.write( " $\"x=%284%2B-sqrt%2816-8%29%29%2F2=%284%2B-sqrt%288%29%29%2F2=%284%2B-2.8284%29%2F2\"$
\n" ); document.write( "2 values:
\n" ); document.write( " $\"x=%284%2B2.8284%29%2F2=6.8284%2F2=highlight%283.4142%29\"$
\n" ); document.write( " $\"x=%284-2.8284%29%2F2=2.8284%2F2=highlight%281.4142%29\"$
\n" ); document.write( "Let's check, use $\"x=3.4142\"$
\n" ); document.write( " $\"3.4142%5E2-4%283.4142%29%2B2=0\"$
\n" ); document.write( " $\"11.65676-13.6568%2B2=0\"$
\n" ); document.write( " $\"-2.00004%2B2=0\"$
\n" ); document.write( " $\"0.00004=0\"$ , close enough amigo (rounding off)
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo \n" ); document.write( "

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