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

(7+2i)(2+3i) what is this answer
asked 184k views
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(7+2i)(2+3i) what is this answer

asked
User Miguel Ping
by
7.6k points

2 Answers

3 votes
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
answered
User Smur
by
7.1k points
3 votes
this turns into

14+4i+21i+6i^2
14+25i+6(-1)
14+25i-6
8+25i is the answer
answered
User Lokesh Paunikar
by
8.1k points
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