document.write( "Question 89118: Solve by completing the square.
\n" ); document.write( " 2x^2 + 8x + 5 = 0\r
\n" ); document.write( "\n" ); document.write( "If anyone could offer assistance on how to complete this problem step-by-step, it would be greatly appreciated. \r
\n" ); document.write( "\n" ); document.write( "Thank you in advance for your time.
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Algebra.Com's Answer #64778 by tutor_paul(519)\"\" \"About 
You can put this solution on YOUR website!
\"2x%5E2%2B8x%2B5=0\"
\n" ); document.write( "First, put the x^2 and x terms alone on one side of the equation:
\n" ); document.write( "\"2x%5E2%2B8x=-5\"
\n" ); document.write( "You need to be sure the coefficient of x^2 is 1, so divide all terms by 2:
\n" ); document.write( "\"x%5E2%2B4x=-5%2F2\"
\n" ); document.write( "Divide the coefficient of x by 2 and square the result. Add this to both sides of the equation in order to maintain the equality.
\n" ); document.write( "\"x%5E2%2B4x%2B4=-5%2F2%2B4\"
\n" ); document.write( "Simplify right hand side:
\n" ); document.write( "\"x%5E2%2B4x%2B4=3%2F2\"
\n" ); document.write( "Now, the left hand side can be written as a perfect square:
\n" ); document.write( "\"%28x%2B2%29%5E2=3%2F2\"
\n" ); document.write( "Take the square root of both sides:
\n" ); document.write( "x+2=+-sqrt(3/2)
\n" ); document.write( "Solve for x:
\n" ); document.write( "\"highlight%28x=-2%2B-sqrt%283%2F2%29%29\"
\n" ); document.write( "You can plug this into a calculator if you need a numerical answer, but this is usually good enough.
\n" ); document.write( "Good Luck,
\n" ); document.write( "tutor_paul@yahoo.com
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