Help picture below problem 8

Mathematics

1 answer:

chubhunter [2.5K]2 years ago

3 0

Answer:

Together they equal 180 l so you need to do 180-128 which equals 52. The answer is <D measures 52

Step-by-step explanation:

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Expand $(x+1)(x^{2}+1)(x-1)$. What is the sum of the coefficients of the resulting expression?

defon

Answer:

Step-by-step explanation:

Hello, please consider the following.

For any a and b real numbers we can write.

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

We apply this formula two times here, as below.

$(x+1)(x^{2}+1)(x-1)=(x+1)(x-1)(x^{2}+1)\\\\=(x^2-1^2)(x^2+1)=(x^2-1)(x^2+1)\\\\=(x^2)^2-1^2=x^4-1$

We have the coefficient of 1 for $x^4$ and the constant term is -1, so the sum of the coefficients is 0.

Thank you.

8 0

3 years ago

Read 2 more answers

jin donated earning from 2 songs to charity. he donated 864 altogether jins second song earned 5 times much as his first song. h

bulgar [2K]

Since Jin donated his money to charity and he donated $864, that is our total.
We don't know the first amount, so we can call it x.
We don't know the second amount either, but we do know it was 5 times the first, so 5*x = 5x.
We first need to find how much Jin earned for the first song. We need to find x.
x + 5x = 864, then combine like terms6x = 864, then divide both sides by 66x/6 = 864/4x = 144
The fist song made $144. But the second made 5 times that. So we just multiply 144 by 5. 144*5=720.
The final answer is $720.

3 0

3 years ago

Correct answer gets brainliest! :)

Morgarella [4.7K]

The only correct answer is "D" 9X-3.

3 0

3 years ago

Read 2 more answers

WILL GIVE ALL 5 AND BRAINLIEST

zheka24 [161]

Answer:

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