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Multiply the following complex numbers: (7+2i)(2+3i)
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Multiply the following complex numbers: (7+2i)(2+3i)

User Cyberskunk
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2 Answers

3 votes

When u multiply these two u should get 6i^2+25i+14.

User Ondra
by
5.7k points
4 votes

Answer:


8+25i

Explanation:

Given expression,


(7+2i)(2+3i)


=7(2+3i) + 2i(2+3i) ( Distributive property )


=7(2) + 7(3i) + 2i(2) + 2i(3i) ( Distributive property )


=14+21i+4i+6i^2


=14+(21+4)i-6 ( i² = -1 )


=14+25i-6


=8+25i

Hence,


(7+2i)(2+3i)=8+25i

User Evgeni Nabokov
by
5.9k points
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