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
Eduardwww [97]
3 years ago
11

Factor the trinomial x^2-9x+4x

Mathematics
2 answers:
8090 [49]3 years ago
8 0

Answer:


Step-by-step explanation:

Simplifying

x2 + -9x = 4x + -4

Reorder the terms:

-9x + x2 = 4x + -4

Reorder the terms:

-9x + x2 = -4 + 4x

Solving

-9x + x2 = -4 + 4x

Solving for variable 'x'.

Reorder the terms:

4 + -9x + -4x + x2 = -4 + 4x + 4 + -4x

Combine like terms: -9x + -4x = -13x

4 + -13x + x2 = -4 + 4x + 4 + -4x

Reorder the terms:

4 + -13x + x2 = -4 + 4 + 4x + -4x

Combine like terms: -4 + 4 = 0

4 + -13x + x2 = 0 + 4x + -4x

4 + -13x + x2 = 4x + -4x

Combine like terms: 4x + -4x = 0

4 + -13x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-4' to each side of the equation.

4 + -13x + -4 + x2 = 0 + -4

Reorder the terms:

4 + -4 + -13x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0

0 + -13x + x2 = 0 + -4

-13x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4

-13x + x2 = -4

The x term is -13x.  Take half its coefficient (-6.5).

Square it (42.25) and add it to both sides.

Add '42.25' to each side of the equation.

-13x + 42.25 + x2 = -4 + 42.25

Reorder the terms:

42.25 + -13x + x2 = -4 + 42.25

Combine like terms: -4 + 42.25 = 38.25

42.25 + -13x + x2 = 38.25

Factor a perfect square on the left side:

(x + -6.5)(x + -6.5) = 38.25

Calculate the square root of the right side: 6.184658438

Break this problem into two subproblems by setting  

(x + -6.5) equal to 6.184658438 and -6.184658438.


Alik [6]3 years ago
4 0

Answer:


Step-by-step explanation:Simplifying


x2 + -9x = 4x + -4


Reorder the terms:


-9x + x2 = 4x + -4


Reorder the terms:


-9x + x2 = -4 + 4x


Solving


-9x + x2 = -4 + 4x


Solving for variable 'x'.


Reorder the terms:


4 + -9x + -4x + x2 = -4 + 4x + 4 + -4x


Combine like terms: -9x + -4x = -13x


4 + -13x + x2 = -4 + 4x + 4 + -4x


Reorder the terms:


4 + -13x + x2 = -4 + 4 + 4x + -4x


Combine like terms: -4 + 4 = 0


4 + -13x + x2 = 0 + 4x + -4x


4 + -13x + x2 = 4x + -4x


Combine like terms: 4x + -4x = 0


4 + -13x + x2 = 0


Begin completing the square.


Move the constant term to the right:


Add '-4' to each side of the equation.


4 + -13x + -4 + x2 = 0 + -4


Reorder the terms:


4 + -4 + -13x + x2 = 0 + -4


Combine like terms: 4 + -4 = 0


0 + -13x + x2 = 0 + -4


-13x + x2 = 0 + -4


Combine like terms: 0 + -4 = -4


-13x + x2 = -4


The x term is -13x.  Take half its coefficient (-6.5).


Square it (42.25) and add it to both sides.


Add '42.25' to each side of the equation.


-13x + 42.25 + x2 = -4 + 42.25


Reorder the terms:


42.25 + -13x + x2 = -4 + 42.25


Combine like terms: -4 + 42.25 = 38.25


42.25 + -13x + x2 = 38.25


Factor a perfect square on the left side:


(x + -6.5)(x + -6.5) = 38.25


Calculate the square root of the right side: 6.184658438


Break this problem into two subproblems by setting  


(x + -6.5) equal to 6.184658438 and -6.184658438.


You might be interested in
HELP ME PLS
sammy [17]

Answer:

answer is A

Step-by-step explanation:

7 0
3 years ago
To get a 100 kilograms of a 48% fat content chocolate how many kilograms of a 30% and 50% mix should be used
wlad13 [49]
A kilogram %30 chocolate,
b kilogram %50 chocolate,
a+b = 100 kilogram chocolate,

48.(a+b) = 30.a + 50.b
48a + 48b = 30a + 50b
18a = 2b
b = 9a

a+b = a + 9a = 10a = 100 kg
a = 10 kg
b = 9.a = 90 kg

You should use,

10 kg %30 chocolate,
90 kg %50 chocolate
8 0
3 years ago
Pls help asap which orders the numbers from least to greatest?
ANTONII [103]

Answer -5, -2, 1, 3

Step-by-step explanation:

4 0
3 years ago
If the pond has a radius of 6.5 ft how much fencing will he need
andre [41]
6.5 times 2 then that time pi or 3.14
5 0
3 years ago
Can you draw a square with a perimeter of 20 units explain why or why not
Butoxors [25]
Yes because all sides would be equal to 5 which would give you 5*4 = 20 units. 
7 0
3 years ago
Read 2 more answers
Other questions:
  • Whats the simplest form for the ratio of 56:32
    6·2 answers
  • Q1) the world is being invade by alien robots but do not fear because 2 superhero are here to save the day.....
    5·1 answer
  • You have 5 cups of birdseed. You use 3/5 cup of birdseed each day.How many days will your birdseed last
    7·2 answers
  • Umder what conditions can you use a normal distribution to approximate the binomial distrubution
    9·1 answer
  • On average people spend 1/4 of the time they sleep in a dream state. If Maxwell slept 10 hours last night, how much time did he
    14·2 answers
  • To which set or sets does the number 8 belong?
    8·2 answers
  • 96 is 32 percent of what number
    8·1 answer
  • Please answer correctly !!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!
    8·1 answer
  • The diameter of a birch tree is
    8·1 answer
  • Please help me<br> the formula<br> A=1/2 X bX h
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!