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
Zigmanuir [339]
3 years ago
12

Help I cannot figure this question out.

Mathematics
1 answer:
netineya [11]3 years ago
3 0

Answer:

B. x = -1 ± i

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Standard Form: ax² + bx + c = 0
  • Factoring
  • Quadratic Formula: \displaystyle x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}

<u>Algebra II</u>

  • Imaginary Numbers: √-1 = i

Step-by-step explanation:

<u>Step 1: Define</u>

x² + 2x = -2

<u>Step 2: Identify Variables</u>

  1. Rewrite Quadratic in Standard Form [Addition Property of Equality]:        x² + 2x + 2 = 0
  2. Break up Quadratic:                                                                                        a = 1, b = 2, c = 2

<u>Step 3: Solve for </u><em><u>x</u></em>

  1. Substitute in variables [Quadratic Formula]:                                                \displaystyle x=\frac{-2 \pm \sqrt{2^2-4(1)(2)}}{2(1)}
  2. [√Radical] Evaluate exponents:                                                                     \displaystyle x=\frac{-2 \pm \sqrt{4-4(1)(2)}}{2(1)}
  3. Multiply:                                                                                                           \displaystyle x=\frac{-2 \pm \sqrt{4-8}}{2}
  4. [√Radical] Subtract:                                                                                        \displaystyle x=\frac{-2 \pm \sqrt{-4}}{2}
  5. [√Radical] Factor:                                                                                        \displaystyle x=\frac{-2 \pm \sqrt{-1}\sqrt{4}}{2}
  6. [√Radicals] Simplify:                                                                                       \displaystyle x=\frac{-2 \pm 2i}{2}
  7. Factor:                                                                                                             \displaystyle x=\frac{2(-1 \pm i)}{2}
  8. Divide:                                                                                                             \displaystyle x = -1 \pm i
You might be interested in
Your last 4 test scores are 65, 70, 80 and
Anarel [89]

Answer:

Step-by-step explanation:

74*5 = 370

370 - 65 - 70 -70 -80 = 85

So. you need to get 85 on your fifth test.

8 0
2 years ago
Calculator display for 7/12
Alina [70]

Answer:

7/12=0.583333333333

Step-by-step explanation:

7 0
3 years ago
Use compatible numbers to estimate the quotient. <br> 522 divided by 6 please help!!!
Paladinen [302]
The compatible numbers are 5220 and 60 because 522/6 = 87

I GUESS I AM RIGHT AND I REALLY HOPE THIS HELPS!!!!
3 0
3 years ago
Read 2 more answers
Two identical square tables are combined to create a rectangular table, as shown. A third identical square table will be added t
Gnom [1K]

Answer:

456 chairs

Step-by-step explanation:

If there are 6 round tables with 7 chairs each you would multiply 7, 6 times (7 x 6) = 42

If there are 23 rectangular tables with 18 chairs each you would multiply 18, 23 times. ( 18 x 23) = 414

Then you add up all the chairs, 456 chairs total.

If I'm wrong I'm so sorry

if I'm right Thank you (brainliest plz)

5 0
2 years ago
Read 2 more answers
PLEASE SOMEONE ASAP HELP ME!!!!!!!!!!!
MrRissso [65]
She distributed incorrectly.
7 0
2 years ago
Other questions:
  • If f(x)=3x-1 and g(x)=x+2,find (f-g)(x)
    15·1 answer
  • The value of a machine depreciates each year by 5% of its value at the beginning of that year.If its value when new on 1st Janua
    5·1 answer
  • A bamboo pole is leaning against a tree. if the height of the tree is 12.2 meters and the angle made by pole and the ground is 4
    8·1 answer
  • Danielle needs to earn $250 to pay for her vacation. She has $28 saved and she earns $12 per hour after taxes as a lifeguard. Ho
    5·1 answer
  • I need some help here
    11·1 answer
  • What's 3c-9d+7c+5d simplify in algebra
    11·2 answers
  • Urgent please!!!!!!!!!!
    14·1 answer
  • Explain why x=-8 is not part of the domain of the function y=log2(x)
    7·1 answer
  • I need help with this please i have a test
    11·1 answer
  • 100 points and beainliest due yesterday
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!