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dezoksy [38]
3 years ago
11

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

Mathematics
2 answers:
Mashcka [7]3 years ago
5 0

Answer:

{( - 7 + 2i)}^{2}  = ( - 7 + 2i)( - 7 + 2i) \\  = 49 - 14i - 14i + 4 {i}^{2}  \\  = 49 - 28i - 4 \\  = 45 - 28i

Harrizon [31]3 years ago
4 0

Answer:

45-28i

Step-by-step explanation:

(-7+2i)^2

(-7+2i)(-7+2i)

49-14i-14i+4i^2 where i^2=-1

49-28i+4(-1)

49-28i-4

49-4-28i

45-28i

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

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