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
Tcecarenko [31]
1 year ago
6

Factor this polynomial completely x2 - x - 20

Mathematics
2 answers:
dimulka [17.4K]1 year ago
5 0

Answer:

(x +5) (x -4)

Step-by-step explanation:

Factors of 20:

1,20

2,10

4,5

4 and 5 combine to create 1

+5 -4 = 1

(x +5) (x -4)

mafiozo [28]1 year ago
3 0

Answer:

(x+4)(x-5)

Step-by-step explanation:

We can look at it by thinking of two numbers, that add up to -1 and multiply to -20. We can first do this by looking at factors of -20, which are 1, -20, -1, 20, 2, -10, -2, 10, and so on. After looking through it, we can notice that -5 and 4 added equal -1, and when multiplied equal to -20, so they work. So, we factor to (x+4)(x-5)

You might be interested in
The length of the rectangle below is (2x-3) and the width is (x+7). Find the area of the rectangle in terms of x.
krek1111 [17]

Answer:

rgfb

Step-by-step explanation:

2 because if you divide

5 0
3 years ago
If you have ⅜ of one pie, what does the denominator tells you?
BabaBlast [244]
If you have 3/8 of a pie that means you have three slices out of a total of 8. so the denominator tells you the total number of pieces.
5 0
3 years ago
Read 2 more answers
How milliliters are equivalent to 2.7
lianna [129]
2700 millimeters is the answer.
5 0
3 years ago
Read 2 more answers
Restrict the domain of the quadratic function and find its inverse. Confirm the inverse relationship using composition. f(x) = 0
ANTONII [103]

The given function is

f(x)= 0.2 x²

Since f(x) will be defined for all real values of x.

So, Domain of f(x) will be ( x| x is a real number.)→This is set builder notation.

Finding the inverse of f(x):

y = 0.2 x²

→ x²= 5 y

→x = \pm\sqrt{5 y}→ → Inverse of f(x)

Replacing x by y and y by x,we get inverse of the given function

y = \pm\sqrt{5 x}→ →Domain x ≥ 0, x∈[0,∞]

Graph of function and its inverse are shown below.

8 0
3 years ago
Read 2 more answers
If a quantity increases by 25% and then decreases by 25%, will that result be the original quantity? Explain.
alexandr1967 [171]
<span>If a quantity increases by 25% and then decreases by 25%, will that result be the original quantity? Explain.
Let’s try to be able to know the answer:
=> Let’s have 10 as the value
Increase by 25%
=> 10 + 25%
=> 10 * .25 =  2.5
=> 10 + 2.5 = 12.5 the new value
Now, decrease this by 25%
=> 12.5 – 25%
=> 12.5 * .25 = 3.125
=> 12.5 – 3.125 = 9.375 or 9.4
Thus, the given statement is false.

</span>



3 0
3 years ago
Other questions:
  • The scale on a map is 5 cm : 8 km. If the distance between two cities is 56 km, how far apart in cm are the two cities on the ma
    15·2 answers
  • Write 10³ as a multiplication expression having repeated factors.
    12·2 answers
  • 5. Using only odd numbers for numerators,
    12·1 answer
  • What is 3/16 times 3/8? Someone pls help me
    14·2 answers
  • Choose the expression that represents the indicated composition. f(x) = 10x g(x) = x −3 (f º g)(x) = ? 10x – 30 10x – 3 10x2 – 3
    6·2 answers
  • There are three separate, equal-size boxes, and inside each box there are four separate small boxes, and inside each of the smal
    13·1 answer
  • A bike rental shop charges $8 to rent a bicycle (per person), plus $1.75 for every half hour you ride (per person). If the shop
    13·1 answer
  • What expressions are equal to1/3⁶
    11·2 answers
  • Do this jejejejejjejeplsss
    5·1 answer
  • *100 points* pls help on this edulastic, brainly community. Answer the questions in the pic.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!