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
Dovator [93]
3 years ago
11

X⁴+5x²-6=0 solve for x

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
5 0
Let u = x², then we would have u² + 5u - 6 = 0

From here, we can factor it and get us (u-1)(u+6) = 0

So our solution for u is u = -6 or 1.

Now substitute u back to x².

x² = -6 or 1

x = ±√(-6) or ±√1

Since ±√(-6) is not real number, we ignore it.

Which leave us x = ±√1 = <span>±1

So our real solution is x = -1 or 1.</span>
You might be interested in
Find f(-2) when f(t) = -2t + 3<br><br> A) -7 <br> B) -1 <br> C) 1 <br> D) 7
Lady bird [3.3K]

Answer: -1

Step-by-step explanation:

f(t) =  -2t + 3

f(-2) = -2 x -2 + 3                [ substituting the value]

f(-2) = -4 + 3

f(-2) = -1

5 0
3 years ago
If log10 y = 2. what does y equal?
lys-0071 [83]

Answer:

log_{10}  (100) = 2

Step-by-step explanation:

Here, the given expression is:

log_{10}  (y) = 2

Now, by logarithm rules, we know

if  log_{b}(x) = z

, then x =b^{z}

Comparing here, b = 10  and  z = 2

⇒ y  =   10^{2}  = 100

or, log_{10}  (100) = 2

6 0
3 years ago
A store owner wants to develop a new snack mix by mixing chocolate and trail mix. How many pounds of chocolate costing $13.20 pe
Stells [14]

Answer:

13lbs

Step-by-step explanation:

x = number of pounds of chocolate/lbs

13.20(x) + 3.90(10) = 9.16(x + 10)

13.2x + 39 = 9.16x + 91.6 (x100)

1320x + 3900 = 916x + 9160

404x = 5260

x = 1315/101 = 13.0198.... ⇒ 13lbs

8 0
3 years ago
Which is NOT true regarding the hypotenuse? *
Usimov [2.4K]

Answer:

It helps form the right angle = FALSE

Step-by-step explanation:

The legs form the angle

6 0
2 years ago
What are the solutions to the following system?
Dima020 [189]
The answer is
2x+(3x+4)=6
4 0
1 year ago
Other questions:
  • 7 - 3 ( 5t - 10 ) = 67
    6·2 answers
  • Transform the following equation into slope-intercept. Need help on my homework ASAP
    11·1 answer
  • A jar lid has diameter of 42 millimeters.What is the circumference of the lid
    9·1 answer
  • I need the equation of the line in the picture
    11·2 answers
  • Would you use a boxplot or a histogram to estimate the mean? Why In complete sentence use statistics terms
    6·1 answer
  • Analyze the given parts. State if the given information would create a unique triangle, multiple triangles, or no triangle. (You
    11·1 answer
  • The value of b when solving the equation 2 (6 + 12) = 16 is:
    5·1 answer
  • Part 1: Write mathematical equations of sinusoids.
    5·1 answer
  • Find the maximum height of the baseball. I think 68. If it's wrong or right then please explain!
    11·1 answer
  • In a triangle with vertices A,B and C, if C =64° and the lengths AC= 40mm and BC= 70mm find the length AB using cosine rule
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!