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

2(3 -i)(-2 + 4i) = need help
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1 vote
2(3 -i)(-2 + 4i) = need help

User Rra
by
8.1k points

2 Answers

4 votes

Answer: -4+28i

Explanation:

Correct on Edge

User Gordyr
by
7.3k points
3 votes

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

Multiplying the fist two members: (6 - 2i)(-2 + 4i)

Multiplying both binomials: -12 + 24i + 4i - 8i^2

-12 + 28i - 8i^2 = -8i^2 + 28i - 12

the multiplication is: -8i^2 + 28i - 12

User Faujong
by
7.0k points
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