document.write( "Question 32993: Divide:
\n" );
document.write( "x^2 + 12x + 35/x^2 + 4x - 5 / x^2 + 3x - 28 / x-1
\n" );
document.write( "Find (f + g)(7) when f(x)= x + 5 and g(x)= -x^2 - 6\r
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "I tried wroking out the first problem and kept getting (x+5)/(x+5)(x+4)
\n" );
document.write( "Im not sure if the x+5 cancels and leaves x+4. Please help. And for the second problem im confused on what to do. Please help.\r
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #19428 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Factor where you can to get: \n" ); document.write( "[(x+7)(x+5)]/[(x+5)(x-1)]/[(x+7)(x-4)]/(x-1) \n" ); document.write( "This is like a/b/c/d = (a/b)*(d/c) \n" ); document.write( "So, cancel factors that are common to a numerator and a denominator, \n" ); document.write( "for example cancel (x+5) and (x-1) and (x+7) to get: \n" ); document.write( "1/(x-4)\r \n" ); document.write( "\n" ); document.write( "(f + g)(7)= f(7) + g(7)= (7+5) + (-(7^2)-6) \n" ); document.write( "=12-55=-43 \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |