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
Marina86 [1]
3 years ago
9

Help me out! I always mark brainliest. Unless of course, it is incorrect or inadequate. Please include how you did the problem.

Thanks!

Mathematics
1 answer:
Charra [1.4K]3 years ago
5 0
If 2 + 5i is a zero, then by the complex conjugate root theorem, we must have its conjugate as a zero to have a polynomial containing real coefficients. Therefore, the zeros are -3, 2 + 5i, and 2 - 5i. We have three zeros so this is a degree 3 polynomial (n = 3).
f(x) has the equation
                        f(x) = (x+3)(x - (2 + 5i))(x - (2 - 5i))
If we expand this polynomial out, we get the simplest standard form
                        f(x) = x^3-x^2+17x+87
Therefore the answer to this question is f(x) = x^3-x^2+17x+87
You might be interested in
If B(x)=-1,then what is x​
jekas [21]

Step-by-step explanation:

6 0
3 years ago
Is finding 9/10-1/2 the same as finding 9/10-1/4-1/4?explain.
zavuch27 [327]
Yes it is the same. 1/4 +1/4 = 1/2. so 9/10-1/2=9/10-1/2
5 0
3 years ago
The janitor at a school discovered a leak in a pipe. The janitor found that it was leaking at a rate of 3 fl oz per minute. How
Furkat [3]
1.40625 gallons per hour
4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Cfrac%7B33%7D%7B4-%5Csqrt%7B5%7D%20%7D" id="TexFormula1" title="\frac{33}{4-\sqrt{5} }" alt=
kvv77 [185]
The answer I got was: 12 + 3/5

Sorry I didn’t have that symbol thing on my phone so i had to use a slash.
Hope this helps :)
7 0
2 years ago
Determine how many real square root of 49 has.explain. please help me for explain
CaHeK987 [17]
49 only has one square root, which is 7. There is no other number that you can multiply by itself to get 49
7 0
3 years ago
Read 2 more answers
Other questions:
  • Please help please!!!!!!!!!!
    5·1 answer
  • What is the coefficient of the term 6/7xy <br><br><br><br> Plz help
    8·2 answers
  • PLEASE CAN SOMEONE HELP ME WITH THIS!
    14·2 answers
  • Linear equations: w-3=15
    10·2 answers
  • 1/2 divided by 2/3 =
    11·1 answer
  • PLEASE ANSWER ASAP!!!
    12·1 answer
  • What is the equation, in slope-intercept form, for the line that passes through the point (2, −3) and is perpendicular to the li
    14·1 answer
  • Force<br><img src="https://tex.z-dn.net/?f=%20%7Bx%20%7D%5E%7B2%7D%20%2B%206x%20%2B%208%20" id="TexFormula1" title=" {x }^{2} +
    9·2 answers
  • What is the slope-intercept equation for the line below 
    6·1 answer
  • Ejercicio 3: mi casa tiene medidas 5m de ancho por 15 de largo. Se quieren cubrir 72 m2 con baldosas
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!