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Murljashka [212]
3 years ago
9

(1/x-2)-(1/x+2)=

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0

\dfrac{1}{x-2}-\dfrac{1}{x+2}=\dfrac{x+2}{(x-2)(x+2)}-\dfrac{x-2}{(x-2)(x+2)}\\\\=\dfrac{(x+2)-(x-2)}{(x-2)(x+2)}=\dfrac{x+2-x+2}{(x-2)(x+2)}=\dfrac{4}{x^2-4}\to(D)

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

Answer: (D)=(4/x^(2)-4)

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Whis category do all of the shapes belong to?
Maurinko [17]

Answer:

2.1 Squares.

2.2 Rectangles.

2.3 Parallelograms.

2.4 Rhombuses.

2.5 Polygons in General.

Step-by-step explanation:

3 0
3 years ago
What does 2x+1=3x-4 equal?
kondaur [170]

Answer:

5

Step-by-step explanation:

2x + 1 = 3x - 4

-2x       -2x

--------------------

      1 = x - 4

    +4       +4

   ----------------

      5    =  x

The answer is 5.

Hope this helped.

7 0
3 years ago
Read 2 more answers
25-3u=2u ............????????????????????????
pogonyaev
25 - 3u = 2u

You need to get the variable, u, on one side of the equation. You can do this by adding 3u to both sides.

25 = 5u

Now you want to get u by itself, divide 5 off of both sides to find u.

5 = u
8 0
3 years ago
Read 2 more answers
NEED answer pls ,dont understand hope someone can help it is multiple choice except 12,13,14,15
myrzilka [38]

Answer:

C.) Corresponding; B.) m<6 = m<2; and for the last one you probably have to divide so perhaps it might be 30 .

Step-by-step explanation:

5 0
3 years ago
Solve for a -1/4a-4=7/4a-3
ddd [48]
Add 1/4a to both sides
-4= 8/4a-3

Simplify
-4=2a-3

Add 3 to both sides
-1=2a

Divide both sides by 2
-1/2=a

Final answer: a=-1/2
3 0
4 years ago
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