gellyled gellyled

10-09-2021
Mathematics

contestada

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

Respuesta :

27nalhalawi 27nalhalawi

10-09-2021

Answer:

129+57i

Step-by-step explanation:

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ghaithgh ghaithgh

10-09-2021

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

I hope I helped you^_^

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