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
dexar [7]
3 years ago
5

Expand and combine like terms. (5 - 2x^4) (5 + 2x^4) =

Mathematics
2 answers:
blsea [12.9K]3 years ago
5 0

Answer:

25  - 4x^8

Step-by-step explanation:

1)  (5 - 2x^4) (5 + 2x^4)

Simplify using (a - b)(a + b) = a^{2} - b^{2}

2)  5^{2}  - (2x^4)^{2}

Evaluate the power

3)  25  - (2x^4)^{2}

4)  25  - 4x^8

kirill115 [55]3 years ago
3 0

Answer:

25 - 4x^8

Step-by-step explanation:

Use FOIL here.

Combine the first terms of both expressions.

5 * 5 = 25

Combine the outer terms of both expressions.

2x^4 * 5 = 10x^4

Combine the inner terms of both expressions.

-2x^4 * 5 = -10x^4

Combine the last terms of both expressions.

-2x^4 * 2x^4 = -4x^8

(a^x * a^y = a^(x+y).)

Now add those terms.

25 + 10x^4 - 10x^4 - 4x^8

Combine like terms to get:

25 - 4x^8.

You might be interested in
Identify any extraneous solution. See above pic
Sav [38]

Answer:

There are no extraneous solutions

Reasoning:

An extraneous solution is a solution that isn't valid, it might be imaginary like the square root of a negative number.

first we want to isolate z:

1+sqrt(z)=sqrt(z+5)

^2 all      ^2 all

(1+sqrt(z))(1+sqrt(z))=z+5

expand

1+2sqrt(z)+z=z+5

-1              -z  -z -1

2sqrt(z)=4

/2           /2

sqrt(z)=2

^2 all    ^2 all

z=4

Since there is one solution and it is a real number, there are no extraneous solutions.

4 0
3 years ago
Read 2 more answers
What is the total when the product of 57 and .22 is added to 7 percent of 57
11111nata11111 [884]
I believe the total is 16.53. First I took 7% of 57 is 3.99. Then multiplying 57 by 0.22 and adding that to 3.99 which is 16.53
6 0
3 years ago
write the equation if the line in slope- intercept form that passes through (7,-4) with a slope of -1.
QveST [7]

9514 1404 393

Answer:

  y = -x +3

Step-by-step explanation:

The point-slope form can be a useful place to start.

  y -k = m(x -h) . . . . . line with slope m through point (h, k)

You require the line ...

  y -(-4) = -1(x -7)

  y = -x +7 -4 . . . . . . . . eliminate parentheses, add -4

  y = -x +3 . . . . . . . . . slope-intercept form

7 0
3 years ago
The exterior angle of a certain regular polygon is 60°. How many sides does the polygon have?.
givi [52]
<h3>Answer:  6</h3>

Work Shown:

E = exterior angle = 60 degrees

n = number of sides of the regular polygon

n = 360/E

n = 360/60

n = 6

The regular polygon has 6 sides.

3 0
2 years ago
WILL GIVE BRAINLIEST PLEASE HELP
Alenkinab [10]

You can't find slope intercept form because it is perpendicular so the equation is x= -8

3 0
3 years ago
Other questions:
  • Someone help me solve this step by step and please answer within 20 minutes
    9·2 answers
  • A salesperson earns a commission of $459 for selling $2700 in merchandise find the commission rate. Write the answer as a percen
    5·1 answer
  • Give coordinates for any three points that are on the same horizontal line. Include at least one point that has a fraction as a
    13·1 answer
  • The proof that ΔQPT ≅ ΔQRT is shown. Given: SP ≅ SR Prove: ΔQPT ≅ ΔQRT
    5·2 answers
  • HELP I NEED TO COMPLEYE THSISJI toDay
    7·2 answers
  • Find the slope of the line that passes through the points (2, -5) and (7, 1) (find the answer to the last step)
    9·1 answer
  • what are reflex angles? I don't know what they are so just tell me in the most simple way possible of what reflex angles are so
    13·2 answers
  • How many ways can you write a ratio
    6·1 answer
  • A real estate agent has 8 master keys to open several new homes. Only 1 master key will open any given house. If 40% of these ho
    13·1 answer
  • How long will it take for an undersea sonar pulse<br> to travel 3 km?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!