document.write( "Question 469647: Solve by factoring and using the principle of zero products\r
\n" ); document.write( "\n" ); document.write( "x^2+4x-77=0 \n" ); document.write( "

Algebra.Com's Answer #322199 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
\n" );
document.write( "Hi,\r
\n" );
document.write( "\n" );
document.write( "x^2+4x-77=0
\n" );
document.write( "factoring
\n" );
document.write( "(x + 11)(x-7) = 0   |using the principle of zero products
\n" );
document.write( "( x + 11)= 0   x = -11
\n" );
document.write( " (x-7) = 0     x = 7\r
\n" );
document.write( "\n" );
document.write( "May check your factoring using the FOIL Method
\n" );
document.write( "(x + 11)(x-7) = 0 
\n" );
document.write( "F	First terms  x^2 
\n" );
document.write( "O	Outside terms -7x
\n" );
document.write( "I	Inside terms  11x
\n" );
document.write( "L	Last terms    -77
\n" );
document.write( "    \n" );
document.write( "

\n" );