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
Olin [163]
3 years ago
9

(a) Use the fundamental theorem of algebra to determine the number of roots for 2x^2+4x+7 show your work

Mathematics
1 answer:
postnew [5]3 years ago
4 0

Answer:

The answer to your question is: This polynomial does not have root, it does not intercept the x-axis.

Step-by-step explanation:

a)

                                             2x² + 4x + 7

To determine the number of roots of this polinomial, just look at the higher power and that number will be the maximum possible number of roots.

In this exercise, the maximum power is 2, so this polynomial could have at most 2 roots.

b) Find the possible roots of the polynomial, which are multiples of 7

   Possible roots:  ±1, ±7

                                             2x² + 4x + 7

Use synthetic division to find the roots

                                   2     4     7       1

                                          2     6                              

                                   2     6    13                   +1 is not a root

                   

                                   2    4     7        -1

                                        -2    -2                  

                                   2    2    5                    -1 is not a root

                                  2     4     7         7

                                         14   126                  

                                  2     18  133                  +7 is not a root

                                  2     4     7        -7

                                        -14   70                  

                                  2    -10   -77              -7 is not a root

                   

You might be interested in
Solve the equation |4m| − 5 = 11.
Leno4ka [110]

Answer:

Please refer to the attachment

6 0
2 years ago
Use matrix inversion to solve the collection of systems of linear equations. HINT [See Example 4.] (a) −x − 4y + 2z = −10 x + 2y
omeli [17]

Answer:

Step-by-step explanation:

given is a system of linear equations in 3 variables as

-x - 4y + 2z = −10\\ x + 2y - z = 11 \\x + y - z = 14

This can be represented in matrix form as

AX=B Or

\left[\begin{array}{ccc}-1&-4&2\\1&2&-1\\1&1&-1\end{array}\right] *\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}-10\\11\\14\end{array}\right]

So solution set

X would be A^{-1} B

|A|=-1(-1)+4(0)+2(-1)=--1

Cofactors of A are

-1    0    -1

-2   -1     -3

0     1      2

So inverse of A is

1    2   0

0   1     -1  

1     3      -2

Solution set would be

x=12

y=-3

z=-5

8 0
2 years ago
A rectangular prism has a length of 11 centimeters, a height of 18 centimeters, and a width of 11 centimeters. What is it’s volu
ivanzaharov [21]
2,178 cm^3 is the volume
6 0
3 years ago
Estimate the quotient629/8
Solnce55 [7]

Answer:

78.625

Step-by-step explanation:

3 0
3 years ago
PLEASE HELP ME!!! The students in Suzanne's school are painting a rectangular mural outside the building that will be 15 feet by
Andrew [12]

Answer:

length of scale drawing = 9 feet

width of scale drawing = 3 feet

Step-by-step explanation:

Actual dimension  15 feet by 45 feet.

length = 45 feet

width = 15 feet

Dimension on drawing is 20% of actual dimension.

20% = 20/100

Thus,

20% of 15 feet = 20/100 * 15 feet = 3 feet

20% of 45 feet = 20/100 * 45 feet = 9 feet

Thus, length of scale drawing = 9 feet

width of scale drawing = 3 feet

4 0
3 years ago
Other questions:
  • A round patio is 14 m in diameter. what is the distance around the patio
    13·2 answers
  • pay varies directly with the number of sales he makes. He made 22 sales and earned $154. How much will he earn for 35 sales? $
    15·2 answers
  • 18=a<br> Over 2 <br> How do you solve that as a one step
    7·1 answer
  • A flagpole that is 30 feet tall casts a shadow that extends 42 feet from the base of the flagpole. What is the distance from the
    14·1 answer
  • What is the distance between point A -1,3 and point B -7,3
    11·2 answers
  • Property of equality used to solve subtractior<br> equations
    10·1 answer
  • In how many ways can a teacher arrange 5 students in the front row of a classroom with a total of 20 students?
    6·1 answer
  • Set E = { three-digit numbers divisible by 8 }<br> Find n(E) = ? ( don't mind the nos. 3 )
    6·2 answers
  • What is -7(x-2)=1=15-7x
    14·1 answer
  • Charles has 24 marbels .he has 6 more yellow marbles than blue marbels
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!