document.write( "Question 84680: quadratic equation completing the square\r
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document.write( "x^2+4x-32=0\r
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document.write( "please work this one for me I'm stumped....answer is 4,-8 \n" );
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Algebra.Com's Answer #61030 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! completing the square means making a \"perfect square\" out of the quadratic ... you can't change the x terms, but the numbers are fair game\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x^2+4x=32 ... to make a perfect square; take half of the x coefficient, square it, and add\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(4/2)^2=4 ... x^2+4x+4=32+4 ... (x+2)^2=36 ... take square root x+2=+-6 ... so x=4 and x=-8 \n" ); document.write( " |