document.write( "Question 1063520: solve by factoring given that (x+4) is one factor\r
\n" ); document.write( "\n" ); document.write( "x^3+4x^2-16x-64=0 \n" ); document.write( "

Algebra.Com's Answer #678623 by josgarithmetic(39620) $\"\"$ $\"About$

You can put this solution on YOUR website!
Divide by x+4 using synthetic division.
\n" ); document.write( "

\r\n" );
document.write( "-4    |    1    4    -16    -64\r\n" );
document.write( "      |         -4   0      64\r\n" );
document.write( "      |__________________________________\r\n" );
document.write( "          1    0    -16     0\r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Equation now can be stated $\"%28x%2B4%29%28x%5E2-16%29=0\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"%28x%2B4%29%28x%2B4%29%28x-4%29=0\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"system%28x=-4%2Cor%2Cx=4%29\"$ \n" ); document.write( "

\n" );