elainestorm898 elainestorm898

25-04-2019
Mathematics

contestada

Simplify (4 − 8i)(2 − 7i).

8 + 56i2

−48 − 44i

64 − 44i

8 − 44i + 56i2

Respuesta :

25-04-2019

Answer:

8 - 44i + 56i²

Step-by-step explanation:

Use FOIL: (a + b)(c + d) = ac + ad + bc + bd

(4 - 8i)(2 - 7i)

= (4)(2) + (4)(-7i) + (-8i)(2) + (-8i)(-7i)

= 8 - 28i - 16i + 56i²

combine like terms

= 8 + (-28i - 16i) + 56i²

= 8 - 44i + 56i²

Answer Link

Otras preguntas

Why don't any of the isotopes of strontium have the atomic mass of 87.62 amu listed on the periodic table? A) The atomic mass is an average of all isotopes B) I

A researcher decides to study attitudes about body image among a large group of college students. Given the focus of the study, the researcher will likely sel

There’s a 10% chance of rain tomorrow. A spinner with 10 sections is spun to simulate the probability of rain, where spinning a 1 indicates rain. If the results

Examine the impact of the Middle Passage on African culture and identity, and explore ways to preserve and celebrate African heritage today.

one of the targets used in archery competitions has a diameter of 80 cm. The circle in the centre is gold and has a radius of 8 cm. The gold circle is surrounde

A company has the following adjusted balances on December 31,2024 : Accounts Receivable =$79,000; Service Revenue = $440,000; Allowance for Uncollectible Accoun

A radio station runs a promotion at an auto show with a money box with 14 $25 tickets, 10 $5 tickets, and 13 $1 tickets. The box contains an additional 20 "dumm

Create a class called CarInventory with the following attributes: n_cars (int) and cars (list).

A ferris wheel is a vertical, circular amusement ride with radius 9.5m. riders sit on seats tht swivel to. at the bottom of the ride what is the___.

nurse is contributing to the plan of care for a client who has herpes zoster. Which of the following actions should the nurse recommend Including in the plan of