document.write( "Question 67175: how to do these questions?
\n" ); document.write( " (-2+3i)*(4-8i)=\r
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\n" ); document.write( "\n" ); document.write( "(1-6i)*(-2+2i)= \n" ); document.write( "

Algebra.Com's Answer #47761 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
All you need is two facts
\n" ); document.write( "1) i*i = -1
\n" ); document.write( "2) multiply each term in one factor by each term in
\n" ); document.write( "the other factor
\n" ); document.write( " $\"%28-2+%2B+3i%29%2A%284+-+8i%29+=+-8+%2B+16i+%2B+12i+-+24i%5E2\"$
\n" ); document.write( " $\"%28-2+%2B+3i%29%2A%284+-+8i%29+=+-8+%2B+24+%2B+28i\"$
\n" ); document.write( " $\"%28-2+%2B+3i%29%2A%284+-+8i%29+=+16+%2B+28i\"$ answer
\n" ); document.write( "The 2nd is done the same way
\n" ); document.write( "(1-6i)*(-2+2i)= \n" ); document.write( "

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