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xxMikexx [17]
4 years ago
11

Multiply and simplify the product.

Mathematics
2 answers:
Julli [10]4 years ago
8 0
Simplifying the square of a complex binomial is done similarly to a purely real binomial, except that one was to remember the relation i² = -1.

Solving the equation (8 – 5i)<span>² is done below:

Rewriting </span>(8 – 5i)<span>²:

(8 - 5i)(8 - 5i) = 64 - 40i - 40i + 25i</span><span>²

Simplifying and applying </span><span>i² = -1</span><span>:
64 - 80i + 25(-1)
64 - 80i - 25
39 - 80i

From the choices, the answer is C. </span>
Whitepunk [10]4 years ago
8 0

Answer:

39 – 80i

Step-by-step explanation:


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Read 2 more answers
It’s asking for LATERAL surface area btw
lozanna [386]

Answer:

Lateral surface area = 826.5 m²

Step-by-step explanation:

Formula to calculate the lateral surface area of the triangular prism,

Lateral surface area of the triangular prism = Perimeter of the triangular base × Height

Perimeter of the triangular base = 6 + 11 + 12

                                                      = 29 m²

Height of the prism = 28.5 m

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