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Alexxx [7]
3 years ago
8

Multiply each pair of factors. Type the product inthe space provided(6 + 3i)(6 - 3i) =​

Mathematics
2 answers:
Oksana_A [137]3 years ago
4 0

Step-by-step explanation:

6*6 - 6*3i + 6*3i -3i*3i

36-18i+18i-9i^2

36-9(-1)= 36+9= 45

anygoal [31]3 years ago
3 0

\bf \stackrel{\textit{difference of squares}}{(6+3i)(6-3i)}\implies (6)^2-(3i)^2\implies \stackrel{\textit{recall }i^2=-1}{36-(3^2 i^2)}\implies 36-(9\cdot -1) \\\\\\ 36+9\implies 45

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Step-by-step explanation:

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