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
KiRa [710]
3 years ago
9

Part V: If −1 is one of the roots of H(x) = x3 − 7x2 − x + 7, use synthetic division to find the resulting quadratic expression.

Hint: If −1 is a root, (x + 1) is the factor. (2 points)
Part VI: Factor the quadratic expression from Part V to find the final 2 factors and roots. (2 points)
Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
5 0
Solve for x over the real numbers:
x^3 - 7 x^2 - x + 7 = 0
The left hand side factors into a product with three terms:
(x - 7) (x - 1) (x + 1) = 0
Split into three equations:
x - 7 = 0 or x - 1 = 0 or x + 1 = 0
Add 7 to both sides:
x = 7 or x - 1 = 0 or x + 1 = 0
Add 1 to both sides:
x = 7 or x = 1 or x + 1 = 0
Subtract 1 from both sides:
Answer:  x = 7 or x = 1 or x = -1
You might be interested in
Given: △ABC, m∠B=90°<br> AB=12, BC=16, <br> BK⊥AC<br> Find: AC and BK.<br><br><br> PLS HELP ME!!!!!!
Monica [59]
The blue that i circle idont know if the answer is true.. i m just trying

5 0
3 years ago
Pls answer fast i need help
juin [17]

Do it by your self  ok ???

6 0
3 years ago
Read 2 more answers
In the barn, there are horses and chickens. There are 11 heads and 32 legs altogether. How many chickens are there?
Masteriza [31]

Answer:

6 Chickens

Step-by-step explanation:

Let  H represent the number of horses and  C represent the number of chickens. Since there are 32 legs altogether this means that on equation to use would be given by:

2C  +  4 H  =  32     (Eq. 1)

Another equation can be made from the fact that there are 11 heads or 11 animals altogether which can be written as:

C  +  H  =  11    (Eq. 2)

From Eq. 2, solve for the number of chickens:

C  +  H  =  11

C   =  11  - H    (Eq. 3)

Substituting Eq. 3 in Eq. 1, the number of horses can be determined:

2 C  +  4 H  =  32

2 ( 11  −  H )  +  4 H  =  32

22   −  2 H  +  4 H  =  32

2H  =  32  − 22

2 H  = 10

H = 5               Eq.4

Putting Eq.4 in Eq.1

2C + 4*5 =  32

2C = 32 - 20

2C = 12

C = 12/2

C = 6

8 0
3 years ago
Solve for the value of x<br> A) 12<br> B) 42<br> C) -12<br> D) -42
pentagon [3]
The angles of a triangle will always add up to be 180 degrees total.

x + 82 + x + 82 + 40 = 180
2x + 164 + 40 = 180
2x + 204 = 180
Subtract 204 from both sides.
Think of it as “180 + (-204)”
2x = -24
Divide each side by 2.
x = -12

Answer: x = -12
3 0
3 years ago
Write the equation of a line in point Slope form that passes through the points (-8,-3) and (2,2)
ella [17]

Answer:

The midpoint of the points (2,8) and (0,4) is given by:

(

2

x

1

+x

2

,

2

y

1

+y

2

)=(

2

2+0

,

2

8+4

)=(

2

2

,

2

12

)=(1,6)

We must must transform the standard form equation −3x+6y=5 into a slope-intercept form equation (y=mx+b) to find its slope.

−3x+6y=5 (Subtract 3x on both sides.)

6y=3x+5 (Divide both sides by 6.)

y=

6

3

x+

6

5

y=

2

1

x+

6

5

The slope of our first line is equal to

2

1

. Perpendicular lines have negative reciprocal slopes, so if the slope of one is x, the slope of the other is

x

1

.

The negative reciprocal of

2

1

is equal to −2, therefore, −2 is the slope of our line.

Since the equation of line passing through the midpoint (1,6), therefore, substitute the given point in the equation y=−2x+b:

6=(−2×1)+b

6=−2+b

b=6+2=8

Substitute this value for b in the equation y=−2x+b:

y=−2x+8

Hence, the equation of the line is y=−2x+8.

Step-by-step explanation:

make me as brain liest

4 0
3 years ago
Other questions:
  • What is the volume of the prism?
    11·2 answers
  • Cait purchases a $20 item at a store. She uses a coupon to receive a 15% discount and she pays 6% on the item. She calculates th
    10·1 answer
  • Which two triangles are congruent by ASA? <br> MP bisects QO and angle MQP congruent angle ROP
    5·2 answers
  • An isosceles triangle has an angle that measures 40 degrees. Which other angles could be in that isosceles triangle? Choose all
    14·2 answers
  • Solve each system by substitution.<br> 1. x = y + 2<br> 2y + x = 17
    12·1 answer
  • I NEED HELP ASAP!!!!!!!!!! Rylie paid $12 for two cans of racquetballs as shown in the tape diagram, where the green bars repres
    7·1 answer
  • What is the answer to this?
    14·1 answer
  • URGENT Write the equations of a line parallel to y = -1/3x-4 thru (6,-4)
    8·2 answers
  • Pls help me ASAP and ill give brainliest
    13·1 answer
  • If f(x)=|x+6|, find f(−10).
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!