document.write( "Question 716766: Rational Root to x^3 + 2x^2 - 8x - 16 = 0 \n" ); document.write( "
Algebra.Com's Answer #439971 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
Rational Root to
\n" ); document.write( "x^3 + 2x^2 - 8x - 16 = 0
\n" ); document.write( "factor by grouping:
\n" ); document.write( "x^2(x+2)-8(x+2)=0
\n" ); document.write( "(x+2)(x^2-8)=0
\n" ); document.write( "x=-2
\n" ); document.write( "or
\n" ); document.write( "x=±√8 \n" ); document.write( "
\n" );