document.write( "Question 1134492: (2x + 1)C3 - (2x-1)C3 - 2(xC2)\r
\n" );
document.write( "\n" );
document.write( "NOTE: C stands for combination' \n" );
document.write( "
Algebra.Com's Answer #751882 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! (2x + 1)C3 - (2x-1)C3 - 2(xC2) \n" ); document.write( "NOTE: C stands for combination' \n" ); document.write( "----- \n" ); document.write( "[(2x+1)(2x)(2x-1)/(1*2*3)] - [(2x-1)(2x-2)(2x-3)/(1*2*3)] - 2[x(x-1)/(1*2)] \n" ); document.write( "------- \n" ); document.write( "= [(2x+1)(2x)(2x-1) - (2x-1)(2x-2)(2x-3) - 3*2[x(x-1)]/6 \n" ); document.write( "------- \n" ); document.write( "= [(2x-1)(4x^2+2x)-(4x^2-10x+6)]/6 -[x^2-x] \n" ); document.write( "------- \n" ); document.write( "etc. \n" ); document.write( "--- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |