document.write( "Question 163304: x(x-2)=4 \n" ); document.write( "

Algebra.Com's Answer #120329 by jojo14344(1513) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%28x-2%29=4\"$
\n" ); document.write( " $\"x%5E2-2x=4\"$
\n" ); document.write( " $\"x%5E2-2x-4=0\"$
\n" ); document.write( "Remember: $\"a=1%2Cb=-2%2C+c=-4\"$
\n" ); document.write( "By Pyth. theorem:
\n" ); document.write( " $\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( " $\"x=%28-%28-2%29%2B-sqrt%28-2%5E2-4%2A1%2A-4%29%29%2F%282%2A1%29\"$
\n" ); document.write( " $\"x=%282%2B-sqrt%284%2B16%29%29%2F2\"$
\n" ); document.write( " $\"x=%282%2B-sqrt%2820%29%29%2F2\"$
\n" ); document.write( "2 values:
\n" ); document.write( " $\"x=%282%2Bsqrt%2820%29%29%2F2=%282%2B4.472136%29%2F2=6.472136%2F2\"$
\n" ); document.write( " $\"highlight%28x=3.236068%29\"$
\n" ); document.write( " $\"x=%282-sqrt%2820%29%29%2F2=%282-4.72136%29%2F2=-2.472136%2F2\"$
\n" ); document.write( " $\"x=-1.236068\"$
\n" ); document.write( "Check it out, $\"x=3.236068\"$
\n" ); document.write( " $\"3.236068%283.236068-2%29=4\"$
\n" ); document.write( " $\"3.236068%281.236068%29=4\"$
\n" ); document.write( " $\"4.000000001=4\"$ close enough! bec of decimals
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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