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]
2 years ago
15

X^2 - 4 Find the roots

Mathematics
1 answer:
charle [14.2K]2 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
Explain why 8.0 is greater then 0.8
SIZIF [17.4K]

Answer:

since the eight in the second number is to the right of the decimal, and there id no other number on the left, the second number isn't even a whole number. It is four fifths of a whole. while the eight in the first number is to the left of the decimal it is a whole number eight times. like, which is more eight cookies or a part of one cookie.

Step-by-step explanation:

3 0
2 years ago
Nina has a job repairing sailboats. To repair a sailboat, she charges a flat fee of $100 plus $40 per hour. The total in dollars
vekshin1

Answer:

y=100+40x

Step-by-step explanation:

5 0
3 years ago
CAN someone help with #4 please?
Masja [62]
The constant of proportionality is <em>4 .</em>

The equation is  [ <em>Height = (4) times (Days)</em> ] .

When the sunflower is 60cm tall,                60 = (4) times (Days).

Divide each side of the equation by 4:       <em>15  =  Days</em>
8 0
3 years ago
Read 2 more answers
Algebra help needed. I appreciate it!
Anna11 [10]
\cfrac{3y-z}{y+5z}  \\\\= \cfrac{3*6-2}{6+5*2} \\\\= \cfrac{18-2}{6+10} \\\\= \cfrac{16}{16} \\\\= 1
7 0
3 years ago
Read 2 more answers
Factor completely 49m4 + 140m2 + 100
postnew [5]

Answer:

Step-by-step explanation:

Use identity : (a + b)²  =a² + 2ab + b²

49m⁴ + 140m² + 100 = 7²(m²)² + 2 * 7m² * 10 + 10²

                                  = (7m²)² + 2 *7m²*10 + 10²

                                   = (7m² + 10)²

                                   = (7m² + 10)(7m² + 10)

5 0
2 years ago
Other questions:
  • in a given formation Carmen a color guard member is at 7, 10 on a planning grid a change in the color guards formation translate
    7·1 answer
  • Perform the operation and reduce the answer fully. 3/4 + 1/10
    8·2 answers
  • Uncle Drew scored 2828 points in 5 5/6 ? minutes during a game of basketball. How many points did he average per minute during t
    8·1 answer
  • A cone-shaped dispenser is filled with cereal. The cone has a radius of 1.5 inches and a height of 5 inches. Which measurement i
    13·1 answer
  • What is a simplified fraction of -4/17?​
    11·1 answer
  • Is it the answer option D?
    14·2 answers
  • Plz I need help with I have 20 mins to submit it ​
    10·1 answer
  • What is the value of 6x+7y-5 when x =2 and y=3​
    12·2 answers
  • During the week, the daily low temperatures were 52°F, 45°F, 51°F, 45°F, and 48°F. If Saturday’s low temperature of 51°F is adde
    13·1 answer
  • Im so confused… PLEASE HELP.. also sorry its so dark but its 6,6
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!