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Umnica [9.8K]
3 years ago
14

Fine the product mentally. [(x+1) (x-1)^2

Mathematics
2 answers:
Murljashka [212]3 years ago
5 0
If the product is: [(x+1) (x-1)]^2 , the answer is:
[(x+1) (x-1)]^2 = [x^2-1]^2 = x^4-2x^2+1
Helga [31]3 years ago
5 0

Answer:

x^4 - 2x^2 +1

Step-by-step explanation:

[(x+1) (x-1)]^2

We notice that this is the difference of squares

a^2 -b^2 = (a+b) (a-b)

Since we have (x+1) (x-1) , it simplifies to (x^2 -1)

[x^2-1]^2

We know  (a-b)^2  is a^2 -2ab +b^2

[x^2-1]^2 = x^4 - 2x^2 +1

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A football team plays in a large stadium. With a ticket price of ​$19​, the average attendance at recent games has been 50 comma
tino4ka555 [31]

Answer:

Part 1: N(x) = 50,000 - 300(x-19)

Part 2: R(x) =-300x² + 55700x

Step-by-step explanation:

Given,

The original price of each ticket = $ 19,

The original attendance = 50,000

Part 1 :

∵ For the each​ $1 increase in the ticket​ price, attendance decreases by 300.

Let x represents the price of each ticket after increment,

Thus, if price increment = (x-19) dollars,

New attendance, N(x) = 50,000 - 300(x-19)

Part 2 :

Since, revenue = price of each ticket × attendance

Thus, the revenue from the football​ game,

R(x) = x(50,000 - 300(x-19))

R(x) = 50000x - 300x²+ 5700x

⇒ R(x) =-300x² + 55700x

8 0
4 years ago
The function f(x) = 2(x - 3)^2 + 9 is graphed in the coordinate plane. Which of the following are true? Select all that apply. *
snow_lady [41]
The axis on symmetry is 3 the minimum is 9 and the y intercept it 9 if your teacher is talking about anything greater than or equal to 9 hope this helps god bless
7 0
3 years ago
Three people are employed to manage the social media accounts of a company. The company has 9 social media accounts. How many ac
Archy [21]

Answer:

the answer is 3

Step-by-step explanation:

first you take the number of account and divide it by how many people are working

9÷3 = 3

so your answer is 3

hope this helped!

7 0
4 years ago
What are the degree and leading coefficient of the polynomial?
vesna_86 [32]

Answer:

Degree: 9

Coefficient: -1

Step-by-step explanation:

The degree of a polynomial is equivalent to the highest degree of all its terms.

The term with the highest degree in this polynomial is y^9

5 0
3 years ago
Read 2 more answers
A local frozen yogurt shop sell its yogurt and topping for $0.45 per ounce. If Felix bought 8.4 ounces, how much did it cost?
erica [24]
8.4 ounces costs $3.78
8 0
3 years ago
Read 2 more answers
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