document.write( "Question 591991: how do i factor the trinomial -x^2 - 11X + 180 \n" ); document.write( "

Algebra.Com's Answer #375815 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+-x%5E2+-+11x+%2B+180+\"$
\n" ); document.write( "Use quadratic formula
\n" ); document.write( " $\"+x+=+%28-b+%2B-+sqrt%28+b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+\"$
\n" ); document.write( " $\"+a+=+-1+\"$
\n" ); document.write( " $\"+b+=+-11+\"$
\n" ); document.write( " $\"+c+=+180+\"$
\n" ); document.write( " $\"+x+=+%28-b+%2B-+sqrt%28+b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+\"$
\n" ); document.write( "

\n" ); document.write( " $\"+x+=+%28+11+%2B-+sqrt%28+121+%2B+720+%29%29+%2F+%28-2+%29+\"$
\n" ); document.write( " $\"+x+=+%28+11+%2B-+sqrt%28+841+%29%29+%2F+%28-2+%29+\"$
\n" ); document.write( " $\"+x+=+%28+11+%2B+29+%29+%2F+%28-2+%29+\"$
\n" ); document.write( " $\"+x+=+40%2F%28-2%29+\"$
\n" ); document.write( " $\"+x+=+-20+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+x+=+%28+11+-+29+%29+%2F+%28-2%29+\"$
\n" ); document.write( " $\"+x+=+%28-18%29+%2F+%28-2%29+\"$
\n" ); document.write( " $\"+x+=+9+\"$
\n" ); document.write( "------------
\n" ); document.write( "Rewriting the answers,
\n" ); document.write( " $\"+-x+-+20+=+0+\"$
\n" ); document.write( " $\"+x+-+9+=+0+\"$
\n" ); document.write( " $\"+%28-+x+-+20+%29%2A%28+x+-+9+%29+=++-x%5E2+-+20x+%2B+9x+%2B+180+\"$
\n" ); document.write( " $\"+%28-+x+-+20+%29%2A%28+x+-+9+%29+=++-x%5E2+-+11x+%2B+180+\"$ \n" ); document.write( "

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