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Georgia [21]
3 years ago
6

Simplify the expression to a + bi form: (-11 - 7i) (2 +6i)

Mathematics
2 answers:
tester [92]3 years ago
5 0

( - 11 - 7i)(2 + 6i) \\  =  - 22 - 66i - 14i - 42 {i}^{2}  \\  =  - 22 - 80i + 42 \\  = 20 - 80i

I hope I helped you^_^

Rainbow [258]3 years ago
4 0

Answer:

20-80i

Step-by-step explanation:

(-11-7i)(2+6i)

-22-14i-66i-42i^2 where i^2=-1

-22-14i-66i-42(-1)

-22-14i-66i+42

-22+42-14i-66i

20-14i-66i

20-80i

Please mark me as Brainliest if you are satisfied with the answer.

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Step-by-step explanation:

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Triangle WXZ and triangle XZY are similar triangles by the side angle side similarity postulate, therefore 16/12 = 12/9.

<h3>What are similar triangles?</h3>

Two triangles are said to be similar if they have the same shape and the ratio of their corresponding sides are in the same proportion. Also, their corresponding angles are congruent.

Triangle WXZ and triangle XZY are similar triangles by the side angle side similarity postulate, therefore 16/12 = 12/9.

Find out more on similar triangles at: brainly.com/question/2644832

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