document.write( "Question 971728: I am dividing Rational expression by another rational expression and am getting stuck. Here is the situation:
\n" );
document.write( "the problem: x^2+3x-28/x^2-36 divided by x^2-13x+36/x^2+11x+30\r
\n" );
document.write( "\n" );
document.write( "After inverting the dividend, I followed the steps and ended up with
\n" );
document.write( "(x-7)(x-4)/(x-9)(x+4) times (x+6)(x+5)/(x-9)(x-4)
\n" );
document.write( "After cancelling out (x-4), I'm stuck.
\n" );
document.write( "The answer key has an answer of
\n" );
document.write( "(x-7)(x+5)/(x-6)(x-9) How did they get that answer if there is still (x+5) and (x+4) still in the equation? \n" );
document.write( "
Algebra.Com's Answer #594118 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! x^2+3x-28/x^2-36 ;; This is (x+7) (x-4)/(x+6)(x-6)\r \n" ); document.write( "\n" ); document.write( " x^2-13x+36/x^2+11x+30 ;; This is (x-9)(x-4)/(x+6)(x+5)\r \n" ); document.write( "\n" ); document.write( "Numerator \n" ); document.write( "(x+7) (x-4)/(x+6)(x-6) * (x+6)(x+5)/(x-4)(x-9)\r \n" ); document.write( "\n" ); document.write( "The (x+6) go away and so do the (x-4)\r \n" ); document.write( "\n" ); document.write( "(x+7)/(x-6) * (x+5)/(x+9)\r \n" ); document.write( "\n" ); document.write( "You can cancel an (x+6); also, the first term in the numerator is (x+7), not (x-7) \n" ); document.write( " \n" ); document.write( " |