document.write( "Question 487112: Good Morning,
\n" ); document.write( "I am trying to solve the following equations x2 - 2x - 13 = 0
\n" ); document.write( "i am not sure if i am finding the square root of each side completely here is the work i have completed so far \r
\n" ); document.write( "\n" ); document.write( "The problem:
\n" ); document.write( "X2 - 2x - 13 = 0 \r
\n" ); document.write( "\n" ); document.write( "Step #1
\n" ); document.write( "Move the constant term to the right side of the equation.
\n" ); document.write( "The constant term is - 13 \r
\n" ); document.write( "\n" ); document.write( "X2 - 2x = 13 \r
\n" ); document.write( "\n" ); document.write( "Step #2
\n" ); document.write( "Multiply each term in the equation by four times the coefficient of the term x
\n" ); document.write( "4x2 - (2x4 =) 8 = (13 x 4 =) 52 \r
\n" ); document.write( "\n" ); document.write( "4x2 - 8 = 52 \r
\n" ); document.write( "\n" ); document.write( "Step #3
\n" ); document.write( "Square the coefficient of the original x term and add it to both sides o the equation
\n" ); document.write( "Original Coefficient = 2 (2 squared =) 4 \r
\n" ); document.write( "\n" ); document.write( "4x2 - 8 + 4 = 52 + 4 \r
\n" ); document.write( "\n" ); document.write( "4x2 - 8 + 4 = 56 \r
\n" ); document.write( "\n" ); document.write( "Step # 4
\n" ); document.write( "Take the square root of both sides\r
\n" ); document.write( "\n" ); document.write( " 4x2 - 8 + 4 = 56 \r
\n" ); document.write( "\n" ); document.write( "Please help me thank You
\n" ); document.write( "Bethany Keitzer
\n" ); document.write( "

Algebra.Com's Answer #332960 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
Your mistake is in steps 2 and 3. Review the \"completing the square\" section in your textbook.
\n" ); document.write( ".
\n" ); document.write( "\"x%5E2+-+2x+-+13+=+0+\"
\n" ); document.write( "\"x%5E2+-+2x+=+13+\"
\n" ); document.write( "Take 1/2 of the coefficient of the x term, square it, and add to both sides:
\n" ); document.write( "\"x%5E2+-+2x+%2B+1+=+13+%2B+1+\"
\n" ); document.write( "\"x%5E2+-+2x+%2B+1+=+14+\"
\n" ); document.write( "factor left:
\n" ); document.write( "\"%28x-1%29%28x-1%29+=+14+\"
\n" ); document.write( "\"%28x-1%29%5E2+=+14+\"
\n" ); document.write( "\"+x-1+=+sqrt%2814%29+\"
\n" ); document.write( "\"+x+=+sqrt%2814%29+%2B+1+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );