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
r-ruslan [8.4K]
3 years ago
15

PLZ Help fast. It's Pre Calculus. This is the only day i get to spend time with my baby sister. please help fast. WILL MARK BRAI

NLIEST.
Which of the following is a root of the polynomial shown below? Look at the graph of the function and find the solutions.
f(x)=x^3+2x^2-x-2
a.1
b.0
c.3
d.2

Which of the following represents the set of possible rational roots for the polynomial shown below? This question is a review from Algebra 2. Remember that possible rational roots take the form of p/q. Where p is a factor of the constant and q is a factor of the leading coefficient.

2x^3+5x^2-8x-20=0
Mathematics
2 answers:
NeX [460]3 years ago
8 0

Answer:

Step-by-step explanation:

Given is the polynomials as

1) f(x) = x^3+2x^2-x-2

The graph of this function has x intercepts as

-2, -1 and 0

Since f(x) =0 has solutions equivalent to x intercepts we see that the roots are

-2,-1 and 0

2) Given is a polynomial as

f(x) = 2x^3+5x^2-8x-20 =0

Using rational roots theorem we find that

the roots possible are ±1.±2,±4,±5,±10,±20,±1/2,±5/2

Using remainder theorem we see that

f(2) =f(-2)=0

By using division, we find that the other factor is 2x+5

Hence roots are 2,-2, -2.5

Ivahew [28]3 years ago
5 0
1) x³ + 2x² - x - 2                            2) 2x³ + 5x² - 8x - 20 = 0

x²(x + 2) - (x + 2)                                x²(2x + 5) - 4(2x + 5) = 0

(x + 2)(x² - 1)                                      (2x + 5)(x² - 4) = 0

(x + 2)(x - 1)(x + 1)                             x = -5/2, +-2

x = -2, 1, -1   << a is the answer.

hope that helps, God bless!
You might be interested in
Can someone please help me out with this I'm stuck
kolbaska11 [484]
A=x^{2}
P=4x

That's the simplest form you can write the area and perimeter of the square in.
4 0
3 years ago
Factorise 7a³b²_14a²b³​
Paraphin [41]

Answer:

7a²b²(a - 2b)

Step-by-step explanation:

Given

7a³b² - 14a²b³ ← factor out 7a²b² from each term

= 7a²b²(a - 2b)

8 0
3 years ago
Which is a peoperty of an angle
Anna11 [10]

Answer: Properties of Angles

The sum of all the angles on one side of a straight line is always 180 degrees. For example: The sum of ∠1, ∠2, and ∠3 is 180 degrees

Step-by-step explanation: I’m smart plz give brainlest

7 0
2 years ago
Read 2 more answers
Choose the equation below that represents the line passing through (1,-4) with a slope or 1/2
olganol [36]

Answer: C. y + 4 = 1/2(x - 1)

Step-by-step explanation:

point slope form is y - y1 = m(x - x1) where m is the slope and (x1, y1) is a point on the line.

6 0
3 years ago
The table shown below displays the distance that students on a track team walked during after-school practice.
Jlenok [28]
The total distance should be: 37.15 miles

Explanation:

You just add all of the distances together:
• 2.75 + 2 + 1.4 + 31= 37.15 miles


Anastasia's distance is much different than the others so in case you meant to put 3.1 here is the answer to that:
• 2.75 + 2 + 1.4 + 3.1= 9.25 miles
7 0
3 years ago
Other questions:
  • the assembly machine in your plant can produce 36,200 parts in 9 hours. How many parts can it produce in 18 hours
    9·1 answer
  • Which of these is most likely a pair of independent variables? A. how fast you write and how fast you finish your assignment
    8·2 answers
  • How can we interpret standard deviation using the Empirical Rule?
    5·1 answer
  • Anyone know this???if so can u help me plz
    7·2 answers
  • Write the equation of the circle with center (−3, 2) and (6, 4) a point on the circle.
    11·2 answers
  • Solve forx:<br> 3x + 128<br> 3x +22
    10·1 answer
  • A stack of 10 different cards are shuffled and spread out face down. If 3 cards are turned face up, how many different 3-card co
    10·1 answer
  • Hi! Can you join my quizizz? The code is 5373177.<br> The website is quizizz.com
    11·2 answers
  • This is 7th grade math
    5·2 answers
  • Which number will make the two fractions equivalent? 6/7=?/21
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!