document.write( "Question 606909: Hello! I need to solve this equation by completing the square:
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document.write( "5x^2+15x-1 =0\r
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document.write( "I know that the answer is -15-7√5/10, -15+7√5/10, I just don't know how to show all of the work. I know that I divide everything by 5, and you have a 3x. Then, take half of then and then square it (leaving it as a fraction).\r
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document.write( "This is due in the morning and I'm stuck. I'd appreciate help! Thanks! \n" );
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Algebra.Com's Answer #382314 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 5x^2+15x-1 =0 \n" ); document.write( "5x^2+15x = 1 \n" ); document.write( "x^2 + 3x = 1/5 \n" ); document.write( "x^2 + 3x + (3/2)^2 = 1/5 + (3/2)^2 \n" ); document.write( "x^2 + 3x + 9/4 = 1/5 + 9/4 = 49/20 \n" ); document.write( "etc \n" ); document.write( " \n" ); document.write( " |