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Andrews [41]
2 years ago
8

1. x² - 1 + y(y - 2x)​somebody plz help meeeeeeeeeeeeeeeeeeeeeee

Mathematics
2 answers:
Nostrana [21]2 years ago
5 0


Step1:Multiply each term in the parentheses by y.


Step2: calculate the product

lawyer [7]2 years ago
4 0

Answer:

{(x + y)}^{2}  - 1

Step-by-step explanation:

{x}^{2}  + y(y - 2x) - 1

{x}^{2}  +  {y}^{2}   - 2xy - 1

Using the identity (a - b)^2 here ,

{(x + y)}^{2}  - 1

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STatiana [176]

Answer: 1/10

Step-by-step explanation:

From the question, we are informed that Karen spent 7/10 hour reading and 3/5 hours writing in her journal.

To calculate how much longer karen spent reading than writing in her journal, we have to subtract 3/5 from 7/10. This will be:

= 7/10 - 3/5

Note that the lowest common multiple of 5 and 10 is 10.

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Therefore, the answer is 1/10

3 0
2 years ago
If 3x + 2y = 8 and x is twice the value of y, what is the value of x<br> -y?
Galina-37 [17]

Answer:

1

Step-by-step explanation:

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x=2(1)

x=2

x-1=2-1

x-y=1

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2 years ago
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jekas [21]

Answer:

c=4×$3.75

Step-by-step explanation:

It would be the problem above because c is the total which equals the total of 4×$3.75.

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8 0
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Simplest form 2/5ths
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Answer:

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Step-by-step explanation:

2/5

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