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Elenna [48]
3 years ago
10

Simplify the expression to a + bi form: (-6 - 9i)(-11 + 7i)

Mathematics
2 answers:
jek_recluse [69]3 years ago
4 0

Answer:

129+57i

Step-by-step explanation:

kumpel [21]3 years ago
3 0

( - 6 - 9i)( - 11 + 7i) \\  = 66 - 42i + 99i - 63 {i}^{2}  \\  = 66 + 57i + 63 \\  = 129 + 57i

I hope I helped you^_^

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