All categories

3 years ago

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

You might be interested in

A manager samples the receipts of every fifth person who goes through the line. Out of 50 people, 4 had a mispriced item. If 1,4

KiRa [710]

Answer:

112 people

Step-by-step explanation:

$\frac{4}{50}$ = $\frac{x}{1400}$ write the proportion where x is the number of people with a missplaced time

50x = 5600 cross multipy

x = 112 divide both sides by 50

3 0

2 years ago

how do you multiply binomials? Plz help! Will mark brainliest whoever answers first! Thank you for helping me, and have a good d

zepelin [54]

1. multiply the first term of each binomials together

2. multiply the out terms together.

3. multiply the inner terms together

4. multiply the last terms of each expression together

5. list the four results of FOIL in order

6. combine the like terms.

I hope this helps

6 0

3 years ago

I’m not great with graphs, photo attached

maria [59]

Answer:

Option 2

Step-by-step explanation:

The quantities are not proportional because the line of the graph is both passing through the origin. It might have been proportional if it was passing through the origin.

8 0

2 years ago

Read 2 more answers

A local coffee shop serves 2 9 as many customers as a shop run by a national coffee chain. The shop run by the chain serves 502

dexar [7]

I believe that it is 531 customers

6 0

2 years ago

Read 2 more answers

The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tail

WINSTONCH [101]

Answer: Two-tailed test.

Population mean is the parameter which is tested.

Step-by-step explanation:

Given : $H_0: \mu=105$

$H_1:\mu\neq105$

We know that , the alternative hypothesis ( $H_1$ ) indicates kind of the hypothesis test we need to perform whether left-tailed, right-tailed, or two-tailed.

Here, the alternative hypothesis ( $H_1$ ) is two-tailed, so the hypothesis test is a two-tailed test.

Also, the parameter present in the hypothesis is $\mu$ which is a symbol to represent the population mean.

Thus , Population mean is the parameter which is tested.

8 0

2 years ago