3 years ago

(2 + 5i)(2 + i) please help me to understand how to do it

Mathematics

1 answer:

Tpy6a [65]3 years ago

8 0

(2 + 5i)(2 + i)
= 4 + 10i + 2i + 5i^2
= 4 + 12i + 5i^2

You might be interested in

Two numbers are respectively 40% and 60% more than a third number. The ratio of the two numbers is:

Mekhanik [1.2K]

Answer:

7:8

Step-by-step explanation:

7 0

3 years ago

Given the two vertices and the centroids of a triangle, how many possible locations are there for the third vertex?

hoa [83]

Answer:

Step-by-step explanation:

The centroid is the average of the coordinates of the three vertices. If you know two vertices (A and B) and the centroid (Q), then the third vertex (C) is ...

C = 3Q -A -B

It has only one possible location.

7 0

3 years ago

Find the average. 11,16,15,22 A.64 B.15 C.17 D.16

Artemon [7]

Your answer is D)16. To find the average, add up all the numbers and divivde by the number of numbers there is

7 0

3 years ago

Read 2 more answers

7. You lose three points each time you answer

Olin [163]

Answer:

ur down 24 pts.

Step-by-step explanation:

3×8=24

...............

7 0

3 years ago

Read 2 more answers

The result of dividing two number is the __________________.

pantera1 [17]

Answer: Quotient

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers