document.write( "Question 255196: 7+3i/3+9i \n" ); document.write( "
Algebra.Com's Answer #187493 by dabanfield(803)![]() ![]() ![]() You can put this solution on YOUR website! 7+3i/3+9i\r \n" ); document.write( "\n" ); document.write( "Multiply numerator by the complex conjugate of 3+9i.\r \n" ); document.write( "\n" ); document.write( "The complex conjugate of 3+9i is 3-9i\r \n" ); document.write( "\n" ); document.write( "So we have:\r \n" ); document.write( "\n" ); document.write( "[(7+3i)*(3-9i)]/[3+9i)*(3-9i)] = \r \n" ); document.write( "\n" ); document.write( "[21-63i+9i+27i^2]/[9-81i^2] = \n" ); document.write( "[21-54i+(27*-1)]/[9-81*(-1)] = \n" ); document.write( "(21-27-54i)/(9+81) = \n" ); document.write( "(-6-54i)/90 = -1/15 - 3i/5 = = (-1/5)*(1/3 + 3i) \n" ); document.write( " |