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
Mariana [72]
3 years ago
14

Y^3-9y^2+y-9 I don't know how to solve this can you help

Mathematics
1 answer:
aleksley [76]3 years ago
3 0
I'm guessing your problem is this:
y³ - 9y² + y - 9 = 0
right?

In solving this problem, I recommend doing this:
y³ - 9y² + y - 9 = 0
Factor out a y² from the first two numbers in the problem:
y²(y - 9) + (y - 9) = 0
Separate the parentheses which means y - 9 goes on one side. The y² added a one since it came from the + 1 in the middle of expression. When you're separating parentheses like this you just take the outside numbers and combine them together. Since + 1 came from the outside of the (y - 9) and y² also was sitting on the outside of (y - 9) combine them to make y² + 1. Like this:
(y² + 1)(y - 9) = 0
Now separate your two parentheses to two separate problems:
(y² + 1) = 0    and    (y - 9) = 0
Now you're y² + 1 will equal:
y² = -1
y = √-1 <-- This number doesn't exist so it will be an imaginary number (i). If you guys didn't learn that in your class I recommend just leaving it as i for that part.
Now solve y - 9 = 0:
y = 9 <-- Since we added nine to both sides to get this.

So you're final answer should be y = i and 9
You might be interested in
Find the values of the variables.
iris [78.8K]

Answer:

x=-1/2

Step-by-step explanation:

2x+2=4x+3

-1=2x

x=-1/2

3 0
2 years ago
What is the value of<br> 3x² + 2y3<br> when x = -4 and y = -2
skad [1K]
Ummmmmmm -26 ......... in
7 0
2 years ago
Read 2 more answers
Emily invested in Google Stock (in the thousands of dollars) between the years 2000- 2013. The value of the stock can be modeled
jek_recluse [69]
To find it, evaluate it at the endpoints and the vertex
in form
f(x)=ax²+bx+c
the x value of the vertex is -b/2a


given
c(t)=1t²-10t+76
x value of vertex is -(-10)/1=10


evaluate c(0) and c(13) and c(10)
c(0)=76
c(13)=115
c(10)=76

it reached minimum in 2000 and 2010
porbably teacher wants 2010
the min value is $76
7 0
3 years ago
MATH hw help!!!!!!!!!!!!!!!!!!!!!!!!!!!!
dolphi86 [110]
"Bucket method"
.. (4)*(14%) + (x)*(8%) = (4 +x)*(10%) . . . . . liters and % are in each "bucket"
.. 56 +8x = 40 +10x . . . . . multiply by 100, eliminate parentheses
.. 16 = 2x . . . . . . . . . . . . . . add -40-8x, then divide by 2
.. 8 = x

8 liters of 8% lemonade should be added to make the mixture 10% lemon juice.
4 0
3 years ago
5. The graph of a proportional relationship contains the point with coordinates (3,12).
Dmitriy789 [7]
Give me brainly and ill tell u
5 0
3 years ago
Other questions:
  • Phineas and Ferb are trying to build the world's tallest water slide. They build the slide in sections that are each 666 meters
    11·2 answers
  • A box consists of 14 components, 5 of which are defective.
    9·1 answer
  • Simplify this radical. the square root of 84
    10·2 answers
  • What are the numbers that have an absolute value of 4?
    10·2 answers
  • Obed's bike is twice as heavy as Elsa bike but only 3 pounds heavier than George bike if George bike weighs 15 pounds how much d
    12·2 answers
  • Please help me i really need help​
    11·2 answers
  • What is the answer to 10w + 3 and 3?
    13·2 answers
  • What is the distance between the points (-2, 4) and (10, -1)?
    10·1 answer
  • The angle of elevation from a viewer to the top of a flagpole is 50°. The viewer is 80 ft away and the viewer's eyes are 5.5 ft
    14·1 answer
  • Trevor made a batch of salad dressing. He used 3 times as much oil as vinegar. If Trevor used 9 tablespoons of oil, how many tab
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!