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
djverab [1.8K]
2 years ago
7

If i^2 = −1 and x = i + 9, which is the result of squaring x?

Mathematics
1 answer:
Anestetic [448]2 years ago
8 0

Answer:

80 + 18i

Step-by-step explanation:

i² = -1

x = i + 9

x² = (i + 9)²

Applying; (a + b)² = a² + 2ab + b² concept,

x² = i² + 18i + 81

We know that i² = -1

So x² = -1 + 18i + 81

x² = 81 - 1 + 18i = 80 + 18i

You might be interested in
Solve each system of equations using the elimination method. check the solution.
Blababa [14]
5. the answer is (x,y) = (-1,5)

6. the answer is (x,y) = (0,2)

7. the answer is (x,y) = (-2,1)

8. the answer is (x,y)= (5,0)
4 0
3 years ago
Find the difference in altitude between 2,933 feet on a mountain peak and - 298 feet on a valley floor. The difference in altitu
san4es73 [151]

Answer:

3,231 feet

Step-by-step explanation:

Find the difference between the two heights by subtracting them:

2933 - (-298)

2933 + 298

= 3231

So, the difference in altitude is 3,231 feet

5 0
2 years ago
Read 2 more answers
What is the experimental probability for the lowest frequency?<br> 3/18<br> 4/18<br> 18/4<br> 18/3
elena55 [62]

Answer:

18/3

Step-by-step explanation:

Took the test

5 0
2 years ago
Does (-15, -691) make the equation y = -51x - 74 true?<br><br><br>​
dimulka [17.4K]

Well, we can input both variables to check and see if the numbers hold.

-691 = -51(-15) - 74

-691 = 765-64

-691 = 701

(-15, -691) does not make the equation true.

3 0
3 years ago
Read 2 more answers
Is 3x+5 congruent to 5x-1
Licemer1 [7]
Yes it is congruent to5x-1
7 0
2 years ago
Other questions:
  • Solve the given inequality and graph the solution on a number line. -x/2+3/2&lt;5/2
    5·1 answer
  • A basketball player made 40% of the shots she attempted. She made 32 baskets how many shots did she attempt
    13·2 answers
  • A salesperson earns $350 per week plus 12% of her weekly sales. The expression representing her earnings is 350+0.12x. which of
    14·2 answers
  • Consider random samples selected from the population of all female college soccer players in the United States. Assume the mean
    5·1 answer
  • HELP PLEASE ASAP!!!!
    7·1 answer
  • The local weather report stated there is a 1/3 chance of rain on friday.How likely is it to rain?
    15·1 answer
  • Chantay made this square picture. She wants to glue yarn around the border to make a frame. How much yarn does she need?
    8·2 answers
  • Wich graph best represents a function with range -4 &lt; y &lt; 3
    9·1 answer
  • Helpplsplsplsplsplsplsigiveiraliset
    5·1 answer
  • The axis of symmetry of a quadratic equation is x = –3. If one of the zeroes of the equation is 4, what is the other zero?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!