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
Elza [17]
2 years ago
7

I know the answer is C. but I need to know how to solve it!

Mathematics
1 answer:
otez555 [7]2 years ago
3 0
Yes you are right it's C)
Notice  that f(-2) = (-2)³ +2( - 2)² + 4(-2) + 8 =0
Then x³+2x²+4x+8 is divisible by (x+2)
Perform this division & you will get:

x³+2x²+4x+8 = (x+2)(x²+4)
 The root of (x+2) is the value that render it nil, that is x=-2
  The root of (x²+4) are imaginary (not real) because
  x²+4 =0 ==> x² = -4 & x=√-4 or x= 2i (nor real).
Hope you understood the reasoning



You might be interested in
Find fg(x) <br><img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%20%7Bx%7D%5E%7B2%7D%20%20%2B%202" id="TexFormula1" title="f(x
Kipish [7]

Answer:

f(g(x)) = x^4 + 12x^3 + 14x^2 -132x + 123

Step-by-step explanation:

Here, we simply will place g(x) into f(x)

So every x in f(x) is replaced by g(x)

Thus, we have;

(x^2 + 6x + 11)^2 + 2

= (x^2+6x-11)(x^2 + 6x -11) + 2

= x^4 + 6x^3 -11x^2 + 6x^3 + 36x^2 - 66x -11x^2 -66x + 121 + 2

= x^4 + 12x^3 + 14x^2 -132x + 123

7 0
2 years ago
ONLY RIGHT ANSWERS
dimaraw [331]

Answer:

a?

Step-by-step explanation:

8 0
2 years ago
Finding first six terms of a sequence
Jlenok [28]
2, 4, 6, 8, 10, 12


difference is 2
6 0
3 years ago
Read 2 more answers
Reasoning A store sells packages of comic books with a poster. A poster and 5 comics cost ​$13.99. A poster and 12 comics cost ​
aliya0001 [1]

Answer:

Step-by-step explanation:

Reasoning A store sells packages of comic books with a poster. A poster and 5 comics cost ​$13.99. A poster and 12 comics cost ​$20.99. Write a linear function rule that models the cost y of a package containing any number x of comic books. Suppose another store sells a similar​ package, modeled by a linear function rule with initial value ​$. Use pencil and paper. Explain which store has the better deal. The linear function rule is y nothing.

8 0
2 years ago
Please help me with this math problem, I am lost
Anarel [89]

Answer:

y= 2x +7

Step-by-step explanation:

<u>Slope-intercept</u><u> </u><u>form</u><u>:</u>

y= mx +c, where m is the slope and c is the y-intercept.

Given that the slope is 2, m=2.

y= 2x +c

Given that the y-intercept is -7, c = -7.

y= 2x +7

8 0
3 years ago
Other questions:
  • If 49x2 + 28x - 10 is rewritten as p2 + 4p -10, what is p in terms of<br> p=
    5·1 answer
  • Katie is in charge of buying juice for the teachers breakfast party if one teacher will drink between 18 and 22 ounces of juice
    15·2 answers
  • Which equation is not a linear equation? Question options: a) –4v + 2w = 7 b) x4= y c) x = -5 d) 2x + 3y = 5
    12·1 answer
  • Expand 2x(3x + 2y)<br> ASAP
    14·2 answers
  • Which of the following statements is true?
    9·2 answers
  • the calorie cafe is known for their hotdogs and burgers. the number of calories in a burger is 220 more than the number of calor
    14·1 answer
  • RESPONDE LAS PREGUNTAS 8, 9 Y 10 DE ACUERDO CON LA
    5·1 answer
  • Write a fraction that is equivalent to 3/4 with a denominator of 20
    5·2 answers
  • CAN SOMEONE PLEASE HELP ME ITS DUE TODAY
    7·2 answers
  • What is the net percent gained or lost on a stock with goes down 20% on Monday and then goes up 20% on Tuesday? Use a negative s
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!