document.write( "Question 52871: solve the quadratic equation:
\n" ); document.write( "(x+3)^2=81
\n" ); document.write( "please help thanks \n" ); document.write( "

Algebra.Com's Answer #35259 by funmath(2933) $\"\"$ $\"About$

You can put this solution on YOUR website!
Using the square root property:
\n" ); document.write( " $\"%28x%2B3%29%5E2=81\"$
\n" ); document.write( " $\"sqrt%28%28x%2B3%29%5E2%29=%2B-sqrt%2881%29\"$
\n" ); document.write( "x+3=+or-9
\n" ); document.write( "x+3-3=-3+or-9
\n" ); document.write( "x=-3-9
\n" ); document.write( "x=-12
\n" ); document.write( "and
\n" ); document.write( "x=-3+9
\n" ); document.write( "x=6
\n" ); document.write( "x=-12;x=6
\n" ); document.write( "Not all teachers require set notation:
\n" ); document.write( "In set notation x={-12,6} \n" ); document.write( "

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