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
Kitty [74]
3 years ago
6

What are the solution(s) of x^2-4=0?

Mathematics
2 answers:
emmasim [6.3K]3 years ago
7 0

<u>Answer</u>

+2  and -2


<u>Explanation</u>

x^2-4=0 Is a quadrilateral expression. we can solve it using complete square method.

x²-4=0

x² - 4 + 4 = 0 + 4

x² = 4

x = √4                          or   x = - √4

  = +2                                      = -2

Alex73 [517]3 years ago
6 0

Option B.) x=-2 or x=2

You might be interested in
The ratio of boys to girls in Mr. Johnson's after-school club is the same as the ratio of boys to girls in Ms. Greene's after-sc
nikdorinn [45]

Answer:

18

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Can anyone answer this pls​
nasty-shy [4]

Answer:

x=15 y=12 z=2

Step-by-step explanation:

4x=60 x=15

5y=60 y=12

2z=4 z=2

7 0
3 years ago
What is 2 3/8 as an improper fraction?<br><br> Give answers, please.
m_a_m_a [10]

To convert a mixed fraction into an improper fraction, we must follow some steps.

First, we take the whole part and multiply it by the denominator of the fraction.

In this case, we take 2 and multiply it by 8.

Now we add the numerator:

16+3=19

The denominator stays the same:

\frac{19}{8}

Hope it helps! :)

3 0
3 years ago
Plzz add an explanation for it too
DIA [1.3K]

Answer:

A     $0.02

Step-by-step explanation:

Let's solve how much does it cost to have a bulb on for an hour. ⇒ 120 watt = 0.1 kilowatt per hour which costs 0.20 per kilowatt per ⇒ 0.1 kilowatt per hour* 0.20 = 0.02 dollars in an hour.

3 0
3 years ago
If two lines are parallel, what is their solution? write your answer in a complete sentence
yawa3891 [41]
There is no solution if lines never touch there is no answer
<span />
6 0
3 years ago
Other questions:
  • 4/3 (x - 1/2) + 1/2x ≥ 2/3(2x- 5/2)
    8·1 answer
  • Q1. Ned washes dishes at a constant rate. Ned can hand-wash 18 dirty dishes in 3 minutes. Choose the graph that best represents
    10·1 answer
  • Ann ran 5-kilometers race in 25 minutes
    7·1 answer
  • What is 5 eights in a deceimal number
    8·1 answer
  • What is the coefficient of the variable in the expression 4 − 3x − 7 + 6?
    15·2 answers
  • PLEASE HELP WILL AWARD BRAINLIEST IF RIGHT
    14·1 answer
  • I need serious help in math
    8·2 answers
  • Find value of x for both
    15·1 answer
  • I need help
    7·2 answers
  • Solve the problem below
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!