document.write( "Question 707448: (1+i)(2-4i) \n" ); document.write( "

Algebra.Com's Answer #435792 by vheroli(126) $\"\"$ $\"About$

You can put this solution on YOUR website!
(1+i)(2-4i)
\n" ); document.write( "Use FOIL method (first,out,in,last):
\n" ); document.write( "1*2=2
\n" ); document.write( "1*(-4i)=-4i
\n" ); document.write( "i*2=2i
\n" ); document.write( " $\"i%2A%28-4i%29=+-4i%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( "Then simplify all answers:
\n" ); document.write( " $\"2-4i%2B2i-4i%5E2\"$
\n" ); document.write( "= $\"2-2i-4i%5E2\"$
\n" ); document.write( "= $\"-4i%5E2-2i%2B2\"$ arrange by degree \n" ); document.write( "

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