document.write( "Question 259932: what quantity should be added to both sides of this equation to complete the square?\r
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document.write( "x(2)-8x=5 \n" );
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Algebra.Com's Answer #191385 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! x^2-8x=5 \n" ); document.write( "take 1/2 of the coefficient of x \n" ); document.write( "8/2=4 and square it \n" ); document.write( "4^2=16 \n" ); document.write( "add 16 to complete the square \n" ); document.write( "x^2-8x+16=21 \n" ); document.write( "(x-4)^2=21 \n" ); document.write( "|x-4|=+\-21 \n" ); document.write( "x-4=21 \n" ); document.write( "x=25 \n" ); document.write( "x-4=-21 \n" ); document.write( "x=-17 \n" ); document.write( "x=25 \n" ); document.write( " \n" ); document.write( " |