document.write( "Question 210452: Good afteroon. I have a question regarding completing the square. Here is the equation: \r
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document.write( "I keep coming up with x= 1 plus minus .816 but in class the answer was x=3+square root 6 over 3 and x=3-square root 6 over 3. Does that seem correct? If so I just don't know how it got that way? Any help would be appreciated. :) \n" );
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Algebra.Com's Answer #159023 by tutor_paul(519)![]() ![]() You can put this solution on YOUR website! I am not sure what they are doing in class, but you got it right. \n" ); document.write( " \n" ); document.write( "Divide each term by 9 to get x^2 term to have coefficient of 1: \n" ); document.write( " \n" ); document.write( "Divide coefficient of x by 2 and square. add result to both sides: \n" ); document.write( " \n" ); document.write( "Represent left side as perfect square: \n" ); document.write( " \n" ); document.write( "Take square root of each side: \n" ); document.write( "x-1=+-sqrt(2/3) \n" ); document.write( "Solve for x: \n" ); document.write( "x=1+-sqrt(2/3) \n" ); document.write( "=============== \n" ); document.write( "Good Luck, \n" ); document.write( "tutor_paul@yahoo.com \n" ); document.write( " \n" ); document.write( " |