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monitta
2 years ago
7

Solve for x. 2/x^2−4 − 1/x+2=3/x−2 −32 −12 23 2

Mathematics
2 answers:
choli [55]2 years ago
6 0

Answer:

-\frac{1}{2}

Step-by-step explanation:

1. Multiply both sides of the equation by the LCM (x - 2)(x + 2):

\frac{2}{x^{2} -4} (x-2)(x+2)

factor x² - 4 by rewriting it as x² - 2²

x² - 2² = (x + 2)(x - 2)

now we have;

\frac{2}{(x+2)(x-2)} (x-2)(x+2)

cancel the common factors (x - 2)(x + 2)

= 2

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

\frac{-1}{x+2} (x-2)(x+2)

cross cancel the common factor (x + 2)

\frac{-1}{x-2}=-(x-2)=-x+2

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

\frac{3}{x-2} (x-2)(x+2)

cross cancel the common factor (x - 2)

3(x + 2)

distribute the 3

3x + 6

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

combining all new values, we have;

2 + (-x) + 2 = 3x + 6

-x + 4 = 3x + 6

2. Isolate x:

-x + 4-4 = 3x + 6-4

-x = 3x + 2

-x-3x = 3x-3x + 2

-4x = 2

-4x/-4 = 2/-4

x = -\frac{1}{2}

hope this helps!

Alex Ar [27]2 years ago
4 0

Answer:

x = -1/2.

Step-by-step explanation:

x^2 - 4 = (x - 2)(x + 2)  so if we multiply each term by x^2 -4 we get:

2 - 1(x - 2) = 3(x + 2)

2 - x + 2 = 3x + 6

2 + 2 - 6 = 3x + x

4x = -2

x = -1/2.

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Answer:

x^2+15x+36

Step-by-step explanation:

The complete question is shown in the attachment.

The length of the rectangle is x + 12. The width of the rectangle is x + 3.

Recall that area of a rectangle is Length \times Width

In terms of x, the area is (x+12)(x+3)

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We apply this property to get:

(x+12)(x+3)=x(x+3)+12(x+3)

We expand again to get:

(x+12)(x+3)=x^2+3x+12x+36

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(x+12)(x+3)=x^2+15x+36

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3 years ago
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Korolek [52]

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Step-by-step explanation:

4 0
3 years ago
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vlabodo [156]
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3 years ago
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laiz [17]

Answer:

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Given

\frac{6}{7} = \frac{7}{9}

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Dima020 [189]

Given:

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3x^2+x-5=0

To find:

The solution for the given equation rounded to 2 decimal places.

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We have,

3x^2+x-5=0

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