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
AnnZ [28]
3 years ago
15

Which of the following is a solution of x2 + 2x = −2? (1 point)

Mathematics
1 answer:
geniusboy [140]3 years ago
7 0
X^2 + 2x = -2
x^2 + 2x + 2 = 0

x= \frac{-b\pm \sqrt{b^2-4ac} }{2a} \\x=\frac{-2\pm \sqrt{2^2-(4\times1\times2)} }{2\times1}\\x=\frac{-2\pm \sqrt{4-8} }{2}\\x=\frac{-2\pm \sqrt{-4} }{2}\\x=\frac{-2\pm2i }{2}\\x=-1\pm i

Therefore, x = -1 + i or x = -1 - i

Therefore, the correct answer is the third option.
You might be interested in
Please help ASAP! Will award Brainliest with the best answer!
natita [175]
It would be B) They are congruent
7 0
3 years ago
Read 2 more answers
Change the following number to Scientific Notation.<br> 0.0080098
AlladinOne [14]
Simple

scientific notation
8.009 × 10-3
4 0
3 years ago
Marram spent 3/4 of her allowance at the mall. Of the money spent at the mall1/3 was spent on new earrings. What part of her all
nikitadnepr [17]
3/8 this is your answer so yahhh hope this heped
7 0
3 years ago
A triangle has sides with lengths of 12 kilometers, 35 kilometers, and 37 kilometers. Is it a right triangle?
quester [9]

Answer: yes

Step-by-step explanation:

Using Pythagorean theorem WHICH ONLY WORKS FOR RIGHT TRIANGLES,

a^2+b^2=c^2 where a and b are the two shortest legs.

12^2+35^2=c^2

144+1225=c^2

c^2=1369

c=

c=37

8 0
2 years ago
you have piano lessons every fourth day and guitar lessons every sixth day. Today you have both lessons. In how many days will y
Gekata [30.6K]
In twelve days four and six both go into 12
3 0
3 years ago
Read 2 more answers
Other questions:
  • 18ft 5in -8ft 4in =
    6·2 answers
  • By cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an op
    5·1 answer
  • Which of the following statements are true about the equation below?
    6·2 answers
  • 6409 divided by 61 = ?
    13·2 answers
  • Solve for X in the following equation: 9 = 10X + 3
    15·2 answers
  • Gloria sells skateboards and charges a $15 shipping fee for each skateboard. She sold 14 skateboards last week and charged a tot
    9·2 answers
  • The number of students at Lala High School is 64 less than 3 times the number of students at Banana High School. Which expressio
    12·1 answer
  • If 20% of a number is 386, what will be 30% of the same number
    13·2 answers
  • A and b are positive integers and a-b=2. Evaluate the following:<br> 9^1/2b/3^a
    7·1 answer
  • Does anyone know the square root of my heart because it needs some adding rn...
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!