document.write( "Question 693157: List the stepes for solving the equation x^2 -9= -8x by completing the square method. Explain each step \n" ); document.write( "
Algebra.Com's Answer #427303 by ankor@dixie-net.com(22740)\"\" \"About 
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List the stepes for solving the equation x^2 -9= -8x by completing the square method. Explain each step
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\n" ); document.write( "x^2 -9 = -8x
\n" ); document.write( "write it like this, leaving a space for the value that will complete the square
\n" ); document.write( "x^2 + 8x + ____ = 9
\n" ); document.write( ":
\n" ); document.write( "To complete the square, divide the coefficient of x by 2, and square it
\n" ); document.write( "In this equation 8/2 = 4, squared is 16, so we add 16 to both sides
\n" ); document.write( "x^2 + 8x + 16 = 9 + 16
\n" ); document.write( "x^2 + 8x + 16 = 25
\n" ); document.write( ":
\n" ); document.write( "we know x^2 + 8x + 16 = (x+4)^2, so write it
\n" ); document.write( "(x + 4)^2 = 25
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\n" ); document.write( "Find the square root of both sides
\n" ); document.write( "x + 4 = +/-\"sqrt%2825%29\"
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\n" ); document.write( "Subtract 4 from both sides
\n" ); document.write( "x = - 4 +/- \"sqrt%2825%29\"
\n" ); document.write( "Two solutions
\n" ); document.write( "x = - 4 + 5
\n" ); document.write( "x = 1
\n" ); document.write( "and
\n" ); document.write( "x = - 4 - 5
\n" ); document.write( "x = -9 \n" ); document.write( "
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