document.write( "Question 629311: (4+8i)(4-8i) \n" ); document.write( "

Algebra.Com's Answer #396178 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "Note;  i^2 = -1
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document.write( "(4+8i)(4-8i) = 16 + 64 = 80
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document.write( "F	First terms   16
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document.write( "O	Outside terms -32i
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document.write( "I	Inside terms  +32i
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document.write( "L	Last terms   -1·-64 = 64
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