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
trasher [3.6K]
3 years ago
9

What are the types of roots of the equation below? x^4 - 81 = 0

Mathematics
1 answer:
solmaris [256]3 years ago
4 0
X^4-81=0
(x^2+9)(x^2-9)=0
(not real)=0 (x^2-9)=0
(x^2-9)=(x+3)(x-3)
Real roots=-3,3, also irrational -(-9)^(1/2), (-9)^(1/2)
You might be interested in
No fake answers, thank you. I will happily give brainiest to anyone that answers them all correctly.
True [87]
A) 3/2 b) 6 c) at 1.5 weeks the plants grew 2.25 inches hope this helps
4 0
3 years ago
Read 2 more answers
HELP ASAP 20 BRAINLY POINT PLUS USER HELPPP ​
Ratling [72]

Answer:

A

Step-by-step explanation:

(m / 3) = (12 / 3) = 4

1/2 x 4 = 2

2 + n = 2 + 3/5 = 2 and 3/5 = 13/5

6 0
2 years ago
Read 2 more answers
#8: Linda is saving for retirement. She invest $12,000 in a retirement fund
mestny [16]

Answer:

12000(1+.04)^x

Step-by-step explanation:

12000(1+.04)^x

4 0
2 years ago
. Which algebraic expression is equivalent to the expression below?
I am Lyosha [343]
Since you are not distributing at all, you can ignore the parenthesis :)

When ignoring the parenthesis your equation is
18x + 11 - 4x

Then just combine like terms :)

14x + 11

Your answer is C.

Hope this helped!


5 0
3 years ago
Express the function f(x) =3x^2-6x-18 in the form a(x + h)^2=k, where a, h and k are constants.Hence state the :
ololo11 [35]

Answer:

The minimum value of f(x) is -21 and it occurs at x = 1

Step-by-step explanation:

f(x) =3x^2-6x-18

Factor out the greatest common factor out of the first two terms

f(x) =3(x^2-2x)-18

Complete the square

-2x/2 =-1  (-1)^2 = 1

Add 1  (But remember the 3 out front so we are really adding 3  so we need to subtract 3 to remain balanced)

f(x) = 3(x^2 -2x+1) -3 -18

f(x) = 3(x-1)^2 -21

This is vertex form

f(x) = a(x-h)^2 +k  where (h,k) is the vertex and a is a constant

The vertex is (1,-21)  

Since a > 0 this opens upward and the vertex is a minimum

The minimum value of f(x) is -21 and it occurs at x = 1

6 0
2 years ago
Other questions:
  • Select either relation (if the set is a relation but not a function), function (if the set is both a relation and a function), o
    13·2 answers
  • Find the value of f(2) for the function f(x)=8*x-17
    6·1 answer
  • Mrs. Ameldo's class has 5 students with blue eyes, 7 with brown eyes, 4 with hazel eyes, and 4 with green eyes. Two students are
    11·2 answers
  • 38÷ 177851.4<br><br><br><br><br>HELP ME PLEASE
    9·2 answers
  • Last question and im not sure how to solve it?? pls help
    9·1 answer
  • Jason purchased 2 popcorns and 3 soft drinks for a total of $23. Ann purchased 3 popcorns and 4 soft drinks for a total of $32.5
    5·2 answers
  • 5 bag of sugar kilogram or a gram
    5·1 answer
  • Can someone pleasee help me with the last 4 (5-8)
    7·1 answer
  • What expression is equivalent to 8c + 6 - 3c -2
    11·1 answer
  • Write the equation in standard form. Identify the important features of the graph:
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!