document.write( "Question 680646: Please help me solve this equation: $\"%281-9i%29%281-4i%29%284-3i%29\"$ \n" ); document.write( "

Algebra.Com's Answer #422425 by ReadingBoosters(3246) $\"\"$ $\"About$

You can put this solution on YOUR website!
(1-9i)(1-4i)(4-3i)
\n" ); document.write( "...
\n" ); document.write( "(1-9i)(1-4i)
\n" ); document.write( "1(1) + 1(-4i) - 9i(1) - 9i(-4i)
\n" ); document.write( " $\"1+-+4i+-+9i+%2B+36i%5E2\"$
\n" ); document.write( " $\"1+-+13i+%2B+36i%5E2\"$
\n" ); document.write( "Knowing $\"i%5E2+=+sqrt%28-1%29%5E2+=+-1\"$
\n" ); document.write( " $\"1+-+13i+%2B+36%28-1%29\"$
\n" ); document.write( " $\"1+-+13i+-+36\"$
\n" ); document.write( " $\"-35+-+13i\"$
\n" ); document.write( "...
\n" ); document.write( "(-35-13i)(4-3i)
\n" ); document.write( "-35(4) - 35(-3i) - 13i(4) - 13i(-3i)
\n" ); document.write( " $\"-140+%2B+105i+-+52i+%2B+39i%5E2\"$
\n" ); document.write( " $\"-140+%2B+53i+%2B+39%28-1%29\"$
\n" ); document.write( " $\"-140+%2B+53i+-+39\"$
\n" ); document.write( " $\"highlight_green%28-179+%2B+53i%29\"$
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