document.write( "Question 582164: what is the answer to a^2+16a+15? \n" ); document.write( "

Algebra.Com's Answer #371964 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+a%5E2+%2B+16a+%2B+15+=+%28+a+%2B+15+%29%2A%28+a+%2B+1+%29+\"$
\n" ); document.write( "-------------
\n" ); document.write( "You can find this by completing the square
\n" ); document.write( " $\"+a%5E2+%2B+16a+%2B+%2816%2F2%29%5E2+=+-15+%2B+%2816%2F2%29%5E2+\"$
\n" ); document.write( " $\"+a%5E2+%2B+16a+%2B+64+=+-15+%2B+64+\"$
\n" ); document.write( " $\"+%28+a+%2B+8+%29%5E2+=+49+\"$
\n" ); document.write( " $\"+%28+a+%2B+8+%29%5E2+=+7%5E2+\"$
\n" ); document.write( " $\"+a+%2B+8+=+7+\"$
\n" ); document.write( " $\"+a+=+-1+\"$
\n" ); document.write( "and, also,
\n" ); document.write( " $\"+a+%2B+8+=+-7+\"$
\n" ); document.write( " $\"+a+=+-15+\"$
\n" ); document.write( "----------
\n" ); document.write( "rewrite these as:
\n" ); document.write( " $\"+a+%2B+1+=+0+\"$
\n" ); document.write( " $\"+a+%2B+15+=+0+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+%28+a+%2B+1+%29%2A%28+a+%2B+15+%29+=+0+\"$
\n" ); document.write( " $\"+%28+a+%2B+1+%29%2A%28+a+%2B+15+%29+=+a%5E2+%2B+16a+%2B+15+\"$ \n" ); document.write( "

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