document.write( "Question 564019: divide and simplify z^2-49/z divided by z+7/z+1. I started this problem by multiplying the first equation by the reciprical of the second equation. I came up with the answer z^3+z^2-49z-49/z(z+7) I'm not sure that I did this correctly. \n" ); document.write( "
Algebra.Com's Answer #365171 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! [(z^2-49)/z] / [(z+7)/(z+1)] \n" ); document.write( "---- \n" ); document.write( "Factor: \n" ); document.write( "[(z-7)(z+7)/z] / [(z+7)/(z+1)] \n" ); document.write( "---- \n" ); document.write( "Invert the denominator and multiply: \n" ); document.write( "= [(z-7)(z+7)/z] * [(z+1)/(z+7)] \n" ); document.write( "---------- \n" ); document.write( "Cancel the (z+7) common to numerator and denominator to get: \n" ); document.write( "--- \n" ); document.write( "(z-7)/z *(z+1)/1 \n" ); document.write( "---- \n" ); document.write( "= (z^2-6z-7)/z \n" ); document.write( "==================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "==================== \n" ); document.write( " \n" ); document.write( " |