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Nikolay [14]
3 years ago
8

X2-y2-x-y anyone help to solve this matter ​

Mathematics
2 answers:
RUDIKE [14]3 years ago
8 0

Answer:

(x + y)(x - y - 1)

Step-by-step explanation:

x² - y² - x - y =

= (x - y)(x + y) - (x + y)

= (x + y)(x - y - 1)

use a² - b² = (a - b)(a + b)

Olegator [25]3 years ago
4 0

Answer:

(x+y)(x-y-1)

Step-by-step explanation:

x²-y²-x-y= (x+y)(x-y)-(x+y)= (x+y)(x-y-1)

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Two lines have the following equations
Mashcka [7]

Answer:

(4,-3)

Step-by-step explanation:

Easiest way to do this without any advanced methods is to use the answer choices to your advantage.  

For a.) we have (1,1) meaning x = 1 and y = 1 if we get a 7 for the first equation and a -2 for the second equation then that is the correct answer.

Let x=1, y =1:

4(1)+3(1)=4+3=7  Correct so far.

1+2(1)=1+2=3      Incorrect since we should have got a -2 if this was the solution


Let (0,-1) x = 0, y = -1:

4(0) + 3(-1) = 0 -3 = - 3 Incorrect so we can stop there next answer choice.


Let (4,-3) x = 4 y = -3:

4(4)+3(-3)=16-9=7   Correct so far.

4+2(-3)=4-6=-2      Both are correct!

Therefore the solution (where the lines intersect) is (4,-3).


4 0
3 years ago
Which of the following question would use the calulation 7 x 1/8
Damm [24]

Answer: The answer is D: a pizza is cut into 8 slices Beth eats 7 of them. what fraction of the pizza did Beth eat.

Step-by-step explanation:

If there are 8 slices and 7 of them have been eaten, that means 7/8 have been consumed.

5 0
2 years ago
What is he value of 7 in 506,087
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The value of 7 is 7 because it is in the ones place
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It would be first 31/40,0.7,78%

It might be wrong

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Step-by-step explanation:

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