ricayah ricayah
  • 10-12-2014
  • Mathematics
contestada

(7+2i)(2+3i) what is this answer

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37soccerboss 37soccerboss
  • 10-12-2014
this turns into 

14+4i+21i+6i^2
14+25i+6(-1)
14+25i-6
8+25i is the answer
Answer Link
LittleBear1128 LittleBear1128
  • 10-12-2014
Use FOIL
First
Outter
Inner
Last
(7*2)+(7*3i)+(2i*2)+(2i*3i)
=14+21i+4i+6i
=14+31i
So your answer would be 14+31i
Answer Link

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