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
ryzh [129]
3 years ago
6

Factor completely. x^4-11x^2+28

Mathematics
2 answers:
marissa [1.9K]3 years ago
8 0

Answer:

x⁴ - 11x² + 28

= x⁴ - 4x² - 7x² + 28

= x²(x² - 4) - 7(x² - 4)

= (x² - 7)(x² - 4)

= (x -   \sqrt{7} )(x +  \sqrt{7} )(x - 2)(x  + 2)

Gala2k [10]3 years ago
4 0
Ok umm I think

x^4 - 11x^2 + 28
Write - 11x^2 as a difference
x^4 - 4x^2 - 7x^2 + 28
Factor out x^2 from the expression
x^2 x (x^2 - 4) - 7x^2 + 28
Factor out - 7 from the expression
x^2 x (x^2 - 4) - 7 (x^2 - 4)
Factor out x^2 - 4 from the expression
(x^2 - 4) x (x^2 - 7)
Use a^2 - b^2= (a-b)(a+b) to factor the expression
(x-2) x (x + 2) x (x^2 - 7)
And that’s how it’s (x-2) x (x + 2) x (x^2 - 7) ..... yea and .-.
You might be interested in
<img src="https://tex.z-dn.net/?f=%20%7B%28x%20-%20y%29%7D%5E%7B2%7D%20" id="TexFormula1" title=" {(x - y)}^{2} " alt=" {(x - y)
Lubov Fominskaja [6]

Step-by-step explanation:

=  {(x - y)}^{2}  \\  =  {x}^{2}  - 2xy +  {y}^{2}

3 0
2 years ago
Read 2 more answers
Help it’s urgent please
Anon25 [30]

Answer:

\frac{5 {x}^{2}  + 20xy + 20 {y}^{2} }{x ^{2} - xy -  {6y}^{2}  }

To simplify first factorize both the numerator and the denominator

For the numerator

5x² + 20xy + 20y²

Factor 5 out

5 ( x² + 4xy + 4y²)

Using a² + 2ab + b² = ( a + b)²

The numerator is

5( x + 2y)²

For the denominator

x² - xy - 6y²

Rewrite -xy as a difference

x² + 2xy - 3xy - 6y²

Factorize

We have the denominator as

( x + 2y)( x - 3y)

So we now have

<h2>\frac{5(x + 2y)(x + 2y)}{(x + 2y)(x - 3y)}</h2>

Simplify

<h2>\frac{5(x + 2y)}{x - 3y}</h2>

We have the final answer as

<h2>\frac{5x + 10y}{x - 3y}</h2>

Hope this helps you

8 0
3 years ago
Given: segment LO *hgffddddffvbbbhhhhhhh
NISA [10]

Step-by-step explanation:

misschien kunnen we dan antwoorden op je vraag

8 0
2 years ago
Find the domain for y=5x determine if it's a function
Ira Lisetskai [31]

Answer:

Domain: X is an element of real number

It is a function

Step-by-step explanation:

x is an element of all real numbers

y=5x has a one to one relation. It is a function

4 0
2 years ago
I spent $25 on my grocery delivery service yesterday. It usually costs me $1.20 per mile to drive to the store and I live 8 mile
stira [4]

Answer:

9.60

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Jack and Walter work in a store's gift-wrapping department. Jack can wrap 28 boxes in 2 hours, while Walter takes 3 hours to wra
    10·1 answer
  • 41. You water your roses every sixth
    5·1 answer
  • WILL GIVE BRAINLIEST You can draw a quadrilateral with no parallel lines and at least one right angle. True/ False
    12·2 answers
  • Pleaseeeee helpppp!!!!
    5·1 answer
  • Katrina owns a dance studio and offers four classes a day for $28.00 each, with 10 people maximum per class. If she decides to o
    12·2 answers
  • 1. Name three examples of each of the types of properties of matter:
    12·1 answer
  • What's the slope intercept for of (4,3) and (4,-4
    12·1 answer
  • In January, you deposit $150 into your checking account. Every month after that, you deposit 10% more than you did the month bef
    10·1 answer
  • I need helpppp plssss anyone I’m not the best at math :/
    8·1 answer
  • The z value for a 97. 8% confidence interval estimation is.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!