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5 votes
Perform the indicated operations and write the result in the form of a + bi
(3 - 2i)(4 + 3i)

User Nfirvine
by
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2 Answers

4 votes

Answer:i=√-1

i²=(√-1)(√-1)=-1

(3-2i)(4+3i)=

=(3*4)+(3*3i)+(-2i*4)+(-2i*3i)

=12+9i-8i-6i²

=12+(9i-8i)-(6*-1)

=12+i+6

=18+i

Answer: (3-2i)(4+.3i)=(18+i)

Explanation:

User Jayesh Singh
by
7.3k points
2 votes
Remember:
i=√-1
i²=(√-1)(√-1)=-1


(3-2i)(4+3i)=
=(3*4)+(3*3i)+(-2i*4)+(-2i*3i)
=12+9i-8i-6i²
=12+(9i-8i)-(6*-1)
=12+i+6
=18+i

Answer: (3-2i)(4+.3i)=(18+i)


User Zhengyue
by
6.8k points