document.write( "Question 622278: How to I factor this problem completely?\r
\n" ); document.write( "\n" ); document.write( "x^2-18x+81 \n" ); document.write( "

Algebra.Com's Answer #391257 by matineesuxxx(27) $\"\"$ $\"About$

You can put this solution on YOUR website!
what two numbers multiply together to give you +81 yet add together to give you -18? the answer is -9. so this equation becomes,
\n" ); document.write( " $\"y=%28x%5E2-9x%29%2B%28-9x%2B81%29\"$ \r
\n" ); document.write( "\n" ); document.write( "well now you can factor out an x from the first bracket and -9 from the second bracket and you will get,
\n" ); document.write( " $\"y=x%28x-9%29-9%28x-9%29\"$
\n" ); document.write( "now (x-9) is a common factor. so the equation becomes,
\n" ); document.write( " $\"y=%28x-9%29%28x-9%29\"$
\n" ); document.write( "this is a perfect square, so it is now written as,
\n" ); document.write( " $\"y=%28x-9%29%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( "hope this helps! \n" ); document.write( "

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