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
marusya05 [52]
3 years ago
14

Show that p(x)=2x3−5x2−10x+5 has a real root.

Mathematics
1 answer:
FromTheMoon [43]3 years ago
6 0
Let's pick an arbitrary value of 5.

P(5) = 2(5)^{3} - 5(5)^{2} - 10(5) + 5
= 2(125) - 125 - 50 + 5
= 250 - 125 - 50 + 5
= 80 > 0

Let's pick another arbitrary value: 1

P(1) = 2 - 5 - 10 + 5
= -8 < 0

Between these two values, the polynomial is continuous. This means for the two polynomial points to be satisfied, there must be at least one root between these two points.

We can either use the Intermediate Value Theorem or Newton's method to make a better approximation from there.
You might be interested in
Someone please help me
lawyer [7]
Part a: subtract 48-30=18
Part b: i found it by subtracting 48 -30 because it says left over

3 0
3 years ago
Two numbers have a product of -36<br> They have a sum of -5<br> What are the two numbers?
neonofarm [45]

Answer:

-9,4

Step-by-step explanation:

4 0
2 years ago
Y = -2x + 2 y = 5x + 9​
WITCHER [35]
X=-1 y=4 hope it helps
8 0
2 years ago
Which linear inequality represents the graph below?
musickatia [10]

Answer:

A.

Step-by-step explanation:

It has a negative slope, so B and C are eliminated. The graph also has a solid line instead of a dashed line. This means D is eliminated because it is only greater than. If the graph had a dashed line, then D would be correct, but it does not.

5 0
2 years ago
The Buffalo Bills football team wanted to buy new footballs. what did the team have to pay per football? Be sure to explain all
iogann1982 [59]

Answer: I don't see the amount per football

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Danna wants to make an egg salad. she found a recipe that calls for 4 eggs and it serves 6 people. if she wants to make the egg
    15·1 answer
  • Please help! Will give BRAINLIESTwith to the first correct answer!
    7·1 answer
  • What is this answer 31,398 ÷ 65 =
    7·2 answers
  • What is 7x-6=9x+6? PLEASE HELP ME!!!!!!!!!!!!!
    11·2 answers
  • 2(b + v) = X<br> solve for b
    5·1 answer
  • 2. What is another name for plane S?​
    14·1 answer
  • Find the slope intercept form of an equation given its slope is 1/4 and y intercept is - 3/4
    6·1 answer
  • Period 1- 6th Grade Team A (2020-2021)
    12·2 answers
  • What is an equation of the line that is perpendicular to -x+3y=9 and passes through the point (-3,2)
    14·1 answer
  • What is the slope of this line?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!