renec84411 renec84411
  • 24-01-2022
  • Mathematics
contestada

evaluate y=x^2+x-4, given x=2i

Respuesta :

jimrgrant1 jimrgrant1
  • 24-01-2022

Answer:

y = - 8 + 2i

Step-by-step explanation:

Substitute x = 2i into the equation, noting i² = - 1

y = (2i)² + 2i - 4

 = 4i² + 2i - 4

 = 4(- 1) + 2i - 4

 = - 4 + 2i - 4

 = - 8 + 2i

Answer Link

Otras preguntas

Which statement best supports the idea that significant anger over racism existed in the US during the 1960s?
Five tactors that could hamper effective communication
5+4D =37 HELP ME PLEASE
Y decreased by 25 =10
What forms the northern boundary of the Indian subcontinent? The Arabian Sea The Ganges The Indus The Himalayas
a footballis selling for 35% on the origninal price. The orgininal price was $60. What is the sale price of the football?
What is the meaning of the word "medium" as it is used in the following sentence? The school selected radio as its medium for broadcasting its new policies. (3
A presidential candidate promotes a ________________ during the campaign, the goals of which generally transfer the goals into the ________________ A ) campain
Why was the nations new capital build on the Potomac River between Maryland and Virginia
Which represents the empirical formula for X4Y8?