document.write( "Question 884804: Solving Quadratic Equations by Completing the Square
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document.write( "1.x^2+6x=16
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document.write( "2.x^2+4x=45
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document.write( "3.x^2+8x=-8
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document.write( "4.x^2-12x=-18
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document.write( "5.x^2-10x=50 \n" );
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Algebra.Com's Answer #534690 by mananth(16946)![]() ![]() You can put this solution on YOUR website! x^2+6x=16\r \n" ); document.write( "\n" ); document.write( "Finding the third term to complete the square\r \n" ); document.write( "\n" ); document.write( "Third term = ( (1/2) * co-efficient of x)^2\r \n" ); document.write( "\n" ); document.write( "= (( 1/2) *6)^2\r \n" ); document.write( "\n" ); document.write( "=9\r \n" ); document.write( "\n" ); document.write( "x^2+6x=16 \n" ); document.write( "add 9 to both sides\r \n" ); document.write( "\n" ); document.write( "x^2+6x+9=16+9\r \n" ); document.write( "\n" ); document.write( "(x+3)^2 = 25\r \n" ); document.write( "\n" ); document.write( "x+3 = +/- 5\r \n" ); document.write( "\n" ); document.write( "x= -3+5 = +2 \n" ); document.write( "OR \n" ); document.write( "x=-3-5 =-8\r \n" ); document.write( "\n" ); document.write( "x= 2 OR -8 \n" ); document.write( " \n" ); document.write( " |