document.write( "Question 33597: How can i solve by completing the square? I know a bit how but i just need some help!\r
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document.write( "X^2-X-1=0\r
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document.write( "X^2-X=1\r
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document.write( "X^2-x/2=1/2\r
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document.write( "X^2-x/2+(-1/4)^2=1/2+(-1/4)^2\r
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document.write( "I get lost here can some one help me solve or make any corrections THNX! \n" );
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Algebra.Com's Answer #19993 by Nate(3500)![]() ![]() ![]() You can put this solution on YOUR website! I will copy and correct your problem:\r \n" ); document.write( "\n" ); document.write( "X^2-X-1=0\r \n" ); document.write( "\n" ); document.write( "X^2-X=1 add one\r \n" ); document.write( "\n" ); document.write( "(x-(1/2))^2=1+(1/4) take half of 1 and square that to add to other side\r \n" ); document.write( "\n" ); document.write( "(x-(1/2))^2=(5/4) simplify\r \n" ); document.write( "\n" ); document.write( "x-(1/2)=+ or -((5)^(1/2))/2 square root to get a positive and negative\r \n" ); document.write( "\n" ); document.write( "x=(1/2)+((5)^(1/2))/2) or x=(1/2)-((5)^(1/2))/2) and (1/2)\r \n" ); document.write( "\n" ); document.write( "your answer: \n" ); document.write( "x=(1/2)+((5)^(1/2))/2) or x=(1/2)-((5)^(1/2))/2) \n" ); document.write( " |