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Colt1911 [192]
3 years ago
9

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

Mathematics
2 answers:
mrs_skeptik [129]3 years ago
6 0
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
Nataly_w [17]3 years ago
5 0
This turns into 

14+4i+21i+6i^2
14+25i+6(-1)
14+25i-6
<em>8+25i </em>is the answer
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