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
zzz [600]
3 years ago
15

X^2 - 4 Find the roots

Mathematics
1 answer:
charle [14.2K]3 years ago
8 0
Write the polynomial as an equation.
y=x^2-4

To find the roots of the equation, replace y with 0 and solve.
0=x^2-4

Replace y with 0 and solve for x
X^2-4=0

Add 4 to both sides of the equation
X^2=4

Take the square root of both sides of the equation to eliminate the exponent on the left side.
X= ±√4

The complete solution is the result of both the positive and negative portions of the solution.
X=2,-2

You might be interested in
Nan and Santo are designing a coffee table using 4 inch tiles. Nan uses 30 tiles and Sato uses half as many how many . how many
KiRa [710]
First, you have to find half of 30. To find "half" means that you have to divide by 2. 30 divided by 2 is 15, because 15 + 15 = 30.
30 + 15 = 45
Salo and Nan used 45 total tiles.
Finally, to find out if they have enough tiles you have to divide 36 and 24 by 4. This is because that will tell you how many 4 inch tiles need to be used. So, 36/4 is 9, and 24/4 is 6.
9 tiles + 6 tiles = 15 tiles
Yes, they will have enough tiles to cover the table.
4 0
3 years ago
2 gallons of liquid is divided among 10 people. How much liquid does each person get?
Airida [17]
Each person gets 46.2 cubic inches (25.6 fl oz).
5 0
3 years ago
Read 2 more answers
2+2 i know the answer it’s just points
Lisa [10]

Answer: 4

Step-by-step explanation: yup

4 0
3 years ago
Read 2 more answers
What picture represents inscribed angles could be more then one answer
Alla [95]

Answer:

1 and 3

This is because they go all the way through the circle and the origin touches the inside if the circle the uninscribed angle will also be half of the amount of the inscribed angle if you have a question on that also.

Hope this helps :)

7 0
3 years ago
Please Help I need to pass this exam !
ladessa [460]

Answer:

12000

5% of 300 is 15

800 * 15 = 12000

Hope this helps!

5 0
3 years ago
Other questions:
  • A women invest $688.88 in a savings account that pays 9.25%annually.how much is in the account at the end of the year?
    9·1 answer
  • The product of x and y is less than or equal to 4.
    10·1 answer
  • Find an angle between 0 and 360 degrees that is coterminal with 1260 degrees
    12·2 answers
  • Which term best describes the statement given below?
    11·1 answer
  • What steps do I need to do to get 18×8.7<br><br>23×56.1<br><br>and<br><br>47×5.92
    12·2 answers
  • DISNEY HAS 16 MOVIES THAT ARE ELIGIBLE FOR THE DISNEY VAULT. 62.5% OF THE MOVIES ARE AVAILABLE FOR THE SALE. HOW MANY VAULT MOVI
    10·1 answer
  • Find the discriminant<br>x^2-x+5=0​
    15·1 answer
  • 8x/+1= -9<br><br> what is x?<br> pls hurry I need help.<br> Do NOT convert to decimal
    11·2 answers
  • Jeremey performs the same operations on four values of x. He records each resulting y-value in a table, as shown below. Which eq
    8·1 answer
  • Which expression is equivalent to (15aºb²c34) (3a166-29cº) for all values of a, b, and
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!