SOLUTION: 2i(4+5i)(4-5i) ___________ __ 4+i

Algebra.Com
Question 698041: 2i(4+5i)(4-5i)
______________
4+i

Answer by ankor@dixie-net.com(22740)   (Show Source): You can put this solution on YOUR website!

FOIL
= =
Rationalize the denominator
* = = = =

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