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

other name for blood

FACTORIZE. 9x2y-24xy2-16y3 solve it

you have a full cylindrical glass of water that stands 8 inches tall and has a radius of 1.5 inches .if you pour the water into a larger cylindrical glass that

Which word is an interjection commonly used in advertising?

The length of a pool is 3 feet more than twice its width. If the perimeter of the pool is 72 feet, find the dimensions of the pool by writing and solving a syst

What is the lateral area of the rectangular prism with a base length of 17 m, a base width of 7 m, and a height of 5 m?

What is the lateral area of the rectangular prism with a base length of 17 m, a base width of 7 m, and a height of 5 m?

How do u write 6 more the 7 times a number is 41 in algebraic equation??

FACTORIZE. 9x2y-24xy2-16y3 solve it

Which of the following rivers is the world's busiest waterway ?