document.write( "Question 411648: I need help about how you do this problem step by step .\r
\n" ); document.write( "\n" ); document.write( "Solve the equation by completing the square.
\n" ); document.write( "x2 + 18x + 58 = 0 \n" ); document.write( "
Algebra.Com's Answer #289352 by ankor@dixie-net.com(22740)\"\" \"About 
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Solve the equation by completing the square.
\n" ); document.write( "x^2 + 18x + 58 = 0
\n" ); document.write( "Subtract 58 from both sides, showing the place we need to complete the square:
\n" ); document.write( "x^2 + 18x + ___ = -58
\n" ); document.write( "We find the value to complete the square by; divide the coefficient of x by 2 & square it
\n" ); document.write( "That would be (18/2)^2 which is 81, add 81 to both sides, we have:
\n" ); document.write( "x^2 + 18x + 81 = -58 + 81
\n" ); document.write( "x^2 + 18x + 81 = +23
\n" ); document.write( "factor the perfect square
\n" ); document.write( "(x + 9)^2 = 23
\n" ); document.write( "Find the square root of both sides
\n" ); document.write( "x + 9 = +/-\"sqrt%2823%29\"
\n" ); document.write( "subtract 9 from both sides
\n" ); document.write( "x = -9 +/-\"sqrt%2823%29\"
\n" ); document.write( "Two solutions
\n" ); document.write( "x = -9 + \"sqrt%2823%29\"
\n" ); document.write( "and
\n" ); document.write( "x = -9 -\"sqrt%2823%29\"
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\n" ); document.write( "Was this step-by-step enough for you?\r
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