document.write( "Question 196370This question is from textbook algebra structure and method
\n" ); document.write( ": Can you please help me solve and leave in simplest radical form the following: (((x^2+8x= -16))) \n" ); document.write( "

Algebra.Com's Answer #147250 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%5E2%2B8x=+-16\"$
\n" ); document.write( "Using the complete the square method:
\n" ); document.write( " $\"x%5E2+%2B+8x+%2B+%288%2F2%29%5E2+=+-16+%2B+%288%2F2%29%5E2\"$
\n" ); document.write( "The left side is a perfect square
\n" ); document.write( " $\"%28x+%2B+4%29%5E2+=+-16+%2B+16\"$
\n" ); document.write( " $\"%28x+%2B+4%29%5E2+=+0\"$
\n" ); document.write( " $\"x+%2B+4+=+0\"$
\n" ); document.write( " $\"x+=+-4\"$
\n" ); document.write( "This is a double root at $\"x+=+-4\"$
\n" ); document.write( "I'll plot the function
\n" ); document.write( " $\"+graph%28+300%2C+300%2C+-10%2C+1%2C+-1%2C+10%2C++x%5E2+%2B+8x+%2B+16%29+\"$ \n" ); document.write( "

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