document.write( "Question 184449: Solve using the square root property:\r
\n" ); document.write( "\n" ); document.write( "(x+8)^2=81 \n" ); document.write( "

Algebra.Com's Answer #138446 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%28x%2B8%29%5E2+=+81\"$
\n" ); document.write( "Square roots come in pairs. There is a (+) and a (-)
\n" ); document.write( "square root.
\n" ); document.write( "Take the square root of both sides
\n" ); document.write( " $\"x+%2B+8+=+9\"$
\n" ); document.write( " $\"x+=+1\"$
\n" ); document.write( "and
\n" ); document.write( " $\"x+%2B+8+=+-9\"$
\n" ); document.write( " $\"x+=+-17\"$
\n" ); document.write( "The answers are $\"x+=+1\"$ and $\"x+=+-17\"$
\n" ); document.write( "check answers:
\n" ); document.write( " $\"%28x%2B8%29%5E2+=+81\"$
\n" ); document.write( " $\"%281%2B8%29%5E2+=+81\"$
\n" ); document.write( " $\"81+=+81\"$
\n" ); document.write( "and
\n" ); document.write( " $\"%28-17%2B8%29%5E2+=+81\"$
\n" ); document.write( " $\"%28-9%29%5E2+=+81\"$
\n" ); document.write( " $\"81+=+81\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );