document.write( "Question 319974: When factoring the problem (x+1)^3 - 27x^3 I use the Difference of Cubes (a-b)(a^2 + ab + b^2) to get (x+1-3x)((x+1)^2 + (x+1)*(3x) + (3x)^2). I understand all of this so far. When I simplify I understand everything except how (x+1)^2 is equal to (x^2 + 2x + 1). The solution is: (-2x+1)(13x^2 +5x +1).\r \n" );
document.write( "\n" );
document.write( "can you explain to me why (x+1)^2 = (x^2 + 2x + 1).\r \n" );
document.write( "\n" );
document.write( "^ = exponent. \n" );
document.write( "Thank You \n" );
document.write( "Don \n" );
document.write( "
![\"\"](\"/images/stars/stars-13.gif\")
