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
astra-53 [7]
3 years ago
13

What are the solutions of x^2 + 121 = 0?

Mathematics
2 answers:
dlinn [17]3 years ago
5 0
The answer would be D. -11i and 11i
Novosadov [1.4K]3 years ago
4 0
To solve this question you need to set up the equation and simplify
x^2 +121 = 0     you need to get the x^2 by itself so subtract 121
x^2 = -121   Now take the square root of both sides. but you can;t take the square root of a negative number which is where the i comes into play. 
 x= + -  11 i 


You might be interested in
Which number is the<br> same distance away from -12 as 2?
Ray Of Light [21]

Answer:

-26

Step-by-step explanation:

2 is 14 away from -12. The other number that is 14 away from -12 is -26.

-12 + x = 2

x  = 14

-12 - 14 = -26

4 0
2 years ago
Three roots of a fifth degree polynomial function f(x) are -2,2 and 4 + i which statement describes the number and nature of all
liubo4ka [24]

Answer:

f(x) has three real roots and two imaginary roots.

Step-by-step explanation:

Given that three roots of a fifth degree polynomial function f(x) are -2,2 and (4+i).

Now we need to find about which of the given statements describes the number and nature of all roots for this function.

We know that imaginary roots always occur in conjugate pairs.

So if (4+i) is root then (4-i) must also be the root.

So now we have total 4 roots

-2, 2, (4+i) and (4-i).

Degree of the polynomial is 5 so that means 1 root is still remaining. It can't be imaginary as that must be in pairs

So that means 5th root is real.

Hence correct choice is :

f(x) has three real roots and two imaginary roots.

4 0
3 years ago
Jack bought a shirt for $14 because it was discounted 30%. what is the regular price?
Andru [333]

All you have to do is 14*.30 which equals to $4.20


8 0
3 years ago
If triangle ABC is congruent to triangle DEF, which statement is not true?
ArbitrLikvidat [17]
The answer would be b.) angle C is congruent to angle E. 
Hope this helps
3 0
3 years ago
Read 2 more answers
Simplify the expression by adding or subtracting the linear expressions. 7x + 9x + 8 + 4x + 5 *
Lady_Fox [76]

Answer:

A

Step-by-step explanation:

7x+9x+4x+8+5=20x+13

20+13.

Hope this helps :D

4 0
3 years ago
Other questions:
  • If c(x)=5/x-2 and d(x) = x + 3, what is the domain of (cd)(x)?
    14·1 answer
  •  10 times the sum of half a number and 6 is 8
    7·1 answer
  • What will be the perimeter and the area of the rectangle below if it is enlarged using a scale factor of 6.5?
    12·2 answers
  • What type of angles are these?
    6·2 answers
  • I’ll type it out if you can’t see it well
    9·2 answers
  • 2(x - 3) + 1 = 3x + 4
    11·2 answers
  • What is 2,534.076 rounded to the nearest hundredth
    8·2 answers
  • Please help I’m begging you and explain pls
    7·1 answer
  • What is the area of "triangle " XYZ to the nearest tenth of a square inch? Use special right triangles to help find the height.
    13·2 answers
  • In a video game, players form teams and work together to earn as many points as possible for their team.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!