document.write( "Question 368312: please help me solve this quadratic function :y=x^2+8x=21 \n" ); document.write( "

Algebra.Com's Answer #262445 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
I'm assuming this is your equation,
\n" ); document.write( " $\"x%5E2%2B8x=21\"$
\n" ); document.write( " $\"%28x%5E2%2B8x%2B16%29=21%2B16\"$
\n" ); document.write( " $\"%28x%2B4%29%5E2=37\"$
\n" ); document.write( " $\"x%2B4=0+%2B-+sqrt%2837%29\"$
\n" ); document.write( " $\"highlight%28x=-4+%2B-+sqrt%2837%29%29\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );