1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ValentinkaMS [17]
3 years ago
13

How do you find (2+4i)^3 in rectangular form?

Mathematics
2 answers:
marshall27 [118]3 years ago
8 0

(2+4i)^3=8+48i-96-64i=-88-16i

Paha777 [63]3 years ago
4 0

note that (a + b)³ = a³ + 3a²b + 3ab² + b³

(2 + 4i)³ ← with a = 2 and b = 4i noting that i² = (√-1)² = -1

= 2³ + (3 × 4 × 4i ) + ( 3 × 2 × 16i² ) + ( 4i )³

= 8 + 48i  - 96 - 64i

= - 88 - 16i




You might be interested in
X - 10 > 4x + 20 < x + 10
Delvig [45]

Answer:

12

Step-by-step explanation:

8 0
3 years ago
A store owner recorded the number of tickets sold each hour. the graph shows some of the store owners data what is the slope of
Shalnov [3]

Answer: B 2

Step-by-step explanation:

If you look at the graph, you can see it goes up every hour by 2.

So therefore your answer will be 2.

Hope this helps!

7 0
3 years ago
Read 2 more answers
An army base in the desert is located at the origin, O of an x-y coordinate system. A soldier at point P needs to determine his
Nutka1998 [239]

Answer/step-by-step explanation

The soldier at point P lie on a parabola because he determined his position and distances from towns A and B through measurement of the difference in timing (phase) of radio signals received from the two towns.

This analysis of the signal time difference gives the difference in distance of the soldier at P, from the towns.

This process is known as hyperbolic navigation.

These distances of point P from towns A and B is estimated by the soldier at point P, by measuring the delay localizes the receiver to a hyperbolic line on a chart.

Two hyperbolic lines will be drawn by taking timing measurements from the

towns A and B .

Point P will be at the intersection of the lines.

These distances of point P(The soldier's positions) from town A and town B were determined using the timing of the signals received from the two towns, due to the fact that point P was on a certain hyperbola.

8 0
3 years ago
in the given kite SZ= 10yards , WZ = 10 yards TZ=12 yards , and RZ=32 yards Determine the area of the kite
Fynjy0 [20]

If we assume the given segments are those from the vertices to the point of intersection of the diagonals, it seems one diagonal (SW) is 20 yards long and the other (TR) is 44 yards long. The area (A) of the kite is half the product of the diagonals:

... A = (1/2)·SW·TR = (1/2)·(20 yd)·(44 yd)

... A = 440 yd²

5 0
3 years ago
11. Which regular polygon has a minimum rotation of 45° to carry the polygon onto itself?
ASHA 777 [7]

Answer:

the answer is a octagon that has rotation of 45degrees

3 0
3 years ago
Other questions:
  • Properties of equality
    14·1 answer
  • Jeannie is 5 years older than her younger sister April. Together, Jeannie and April’s ages add to 41. How old is April?
    6·1 answer
  • Can you help? Having a hard time figuring this out. Thanks
    8·1 answer
  • Help! Rational equations confuse me
    9·1 answer
  • Given a triangle with side lengths of a, b, and c, where c is the longest side, which statement is true?
    12·2 answers
  • .
    14·1 answer
  • Help me pls. Graphing Using Slope. Look at the pictures
    7·1 answer
  • What is 3 1/2 x 2 2/3
    9·2 answers
  • PLEASE ANSWER -( 1 - 6n )
    12·1 answer
  • The tree diagram represents an experiment consisting of two trials. (Enter the probability to the hundredths place. Do not round
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!