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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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To do this problem, we assume that Mr. Sanchez is driving at a constant rate.

According to this information, he has driven 120 mi in 3 hr. To find how much he drives in 5 hr, we first have to find how many mi he drives in 1 hour. To do this, we divide 120 miles by 3 hours, since we assume that he managed to drive an equal amount in each hour.

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