document.write( "Question 781625: Solve the quadratic equation by completing the square. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) \r
\n" ); document.write( "\n" ); document.write( "4x2 + 10x − 16 = 0 \n" ); document.write( "
Algebra.Com's Answer #476006 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Solve the quadratic equation by completing the square. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)
\n" ); document.write( "4x2 + 10x − 16 = 0
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\n" ); document.write( "4x^2 + 10x = 16
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\n" ); document.write( "2x^2 + 5x = 8
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\n" ); document.write( "2(x^2 + (5/2)x + ? = 8 + 2*?
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\n" ); document.write( "Complete the square::
\n" ); document.write( "2(x^2 + (5/2)x + (5/4)^2) = 8 + 2(5/4)^2
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\n" ); document.write( "2(x+(5/4))^2 = 8 + (25/8)
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\n" ); document.write( "2(x+(5/4))^2 = 89/8
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\n" ); document.write( "(x+(5/4))^2 = 89/16
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\n" ); document.write( "x = (-5/4) + sqrt(89)/4 or x = (-5/4) - sqrt(89)/4
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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