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2 years ago

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

Mathematics

2 answers:

jek_recluse [69]2 years ago

4 0

Answer:

129+57i

Step-by-step explanation:

kumpel [21]2 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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