emilylarkin emilylarkin

02-10-2020
Mathematics

contestada

HELPPPP (COMLEX NUMBERS AND OPERATIONS

Write the expression 3i(2 - 5i)(4 + i) in the form a + bi.

Respuesta :

jimrgrant1 jimrgrant1

02-10-2020

Answer:

54 + 39i

Step-by-step explanation:

Given

3i(2 - 5i)(4 + i) ← expand factors using FOIL

= 3i(8 - 18i - 5i² ) → using i² = - 1

= 3i(13 - 18i) ← distribute parenthesis by 3i

= 39i - 54i²

= 54 + 39i

Answer Link

Otras preguntas

The technological innovation that most influenced the English language was the A. invention of the computer. B. invention of the recording device.

Rivers that have developed over a long period of time are found in wide valleys with flat, low-lying bottoms. These valleys were created by the removal of rock

32 is 40 percent of what number

Which polynomial is factored completely? a) g^5 - g b) 4g^3 + 18g^2 + 20g c) 24g^2 - 6g^4 d) 2g^2 + 5g + 4

The Joint Information System is

Who got the first Oscar award ever?

Which is a point mutation?

Which branch of government monitors the enforcement and appropriateness of the law? A. the executive branch B. the legislative branch C. the parliamentary branc

European interest in the Middle East intensified after oil was discovered in the region. a. True b. False

What is meant by evolution