document.write( "Question 239174: what is the real part of the standard form of the expression (5+i)(10-i) \n" ); document.write( "
Algebra.Com's Answer #175685 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! (5+i)(10-i) \n" ); document.write( "FOIL this \n" ); document.write( "50 - 5i + 10i -i^2 \n" ); document.write( ": \n" ); document.write( "50 + 5i - (-1) \n" ); document.write( ": \n" ); document.write( "50 + 5i + 1 \n" ); document.write( "which is \n" ); document.write( "51 + 5i \n" ); document.write( ": \n" ); document.write( "51 is the real part \n" ); document.write( " |