document.write( "Question 864126: My homework is :1) X2-2x-13=0 and 2) X2+12x-64=0. I am do use six steps of 1) move constant term to right side of equation
\n" ); document.write( "2) multiply each term in the equation by 4 times the coefficient of the original x2 term.
\n" ); document.write( "3) Square the coefficient of the original x term and add it to both sides of the equation.
\n" ); document.write( "4) Take the square root of both sides
\n" ); document.write( "5) Set the left side of the equation equal to the positive square root of the number on the right side and solve for x.
\n" ); document.write( "6) Set the left side of the equation equal to the negative square root of the number on the right side of the equation and solve for x.
\n" ); document.write( "Please show me how these two problems will look worked out and then I should be able to look at these to see how to do them. Thank you.
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Algebra.Com's Answer #520795 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
Your instructions are wrong for completing the square.
\n" ); document.write( "You or someone else have presented these instructions before. Get rid of them.\r
\n" ); document.write( "\n" ); document.write( "Plus be careful : x is no the same as X
\n" ); document.write( "You or someone else have presented this error before.\r
\n" ); document.write( "\n" ); document.write( "x^2-2x-13=0
\n" ); document.write( "x^2-2x=13
\n" ); document.write( "(1/2*2)^2=1^2=1
\n" ); document.write( "x^2-2x+1=14
\n" ); document.write( "(x-1)^2=14
\n" ); document.write( " x-1=+-sqrt(14)
\n" ); document.write( "x=1+sqrt(14)
\n" ); document.write( "x=1-sqrt(14)\r
\n" ); document.write( "\n" ); document.write( "x^2+12x-64=0\r
\n" ); document.write( "\n" ); document.write( "This could also be factored
\n" ); document.write( "(x-4) (x+16) = 0
\n" ); document.write( "x=4 x=-16
\n" ); document.write( "complete the square
\n" ); document.write( "x^2+12x-64=0
\n" ); document.write( "x^2+12x=64
\n" ); document.write( "12/2=6
\n" ); document.write( "6^2=36
\n" ); document.write( "x^2+12x+36=100
\n" ); document.write( "(x+6)^2=100
\n" ); document.write( "x=-6-10=-16
\n" ); document.write( "x=-6+10=4\r
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