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
Darina [25.2K]
1 year ago
7

What are the zeros of the function f(x) = x^4 - x² - 2?

Mathematics
1 answer:
vaieri [72.5K]1 year ago
7 0

Answer:

x= i\\\\ x = -i \\\\x=\sqrt 2\\\\x = -\sqrt 2

Step-by-step explanation:

~~~~~~x^4 -x^2 -2=0\\\\\implies x^2 \cdot x^2-2x^2 +x^2 -2 = 0\\\\\implies x^2(x^2 -2) +(x^2 -2) =0\\\\\implies (x^2 +1)(x^2 -2) = 0\\\\ \implies x^2 +1=0~~~~~~~~\text{or}~~~~~~~~~x^2 -2 = 0\\\\ \implies x = \pm\sqrt{-1}~~~~~~~\text{or}~~~~~~~~~~ x = \pm\sqrt 2\\\\\implies x= \pm i~~~~~~~~~~~~~\text{or}~~~~~~~~~ x= \pm\sqrt 2

You might be interested in
How do you find the area of a cube measuring 3ft it has 7sides
RUDIKE [14]
3 times 7= 21 times three =63

4 0
3 years ago
Tammaso's family used 24.5 gallons of gas to drive 548.8 miles. How many miles did they drive for each gallon of gas?
djverab [1.8K]
548.8 divided by 24.5=22.4
8 0
3 years ago
A colored ball was drawn out of a bag with replacement. What is
Tresset [83]

Answer:

a

.Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Help please, you smart peoples ;-; Will give brainliest!
olasank [31]

Answer:

o.25 or (2

Step-by-step explanation:

5 0
2 years ago
Which mathematical sentence is represented by the diagram
ElenaW [278]

Answer:

I will attach a picture, but I need you to attach a screenshot so I can solve it.

Step-by-step explanation:

But here:

7 0
2 years ago
Other questions:
  • Which mixed number is equivalent to 904/100
    10·1 answer
  • A family eats at a restaurant that is having a 15% discount promotion. THeir meal cost $78.65, and they leave a 20% tip. If the
    5·1 answer
  • R/10+4=5 Can you help me balance the equation to simply? Thanks!
    11·1 answer
  • In each of the following scenarios, define the type of measurement scale. 1. A kindergarten teacher marks whether each student i
    11·1 answer
  • Anybody got the answer to this?
    15·1 answer
  • Write the equation of the line fully simplified slope-intercept form.
    14·1 answer
  • Pentagon DEFGH is congruent to pentagon QRSTU.
    5·1 answer
  • Log base 4 (x+3)=-3<br> thank you!
    13·1 answer
  • 22.5 12.5 32 20 in least to greatest
    5·2 answers
  • Plz help look at the pic
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!