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What is the x (4/x+2)+(1/x-2) = (5x-6)/(x^2-4)? 

 Oct 6, 2014

Best Answer 

 #3
avatar+33661 
+5

Then we have 4/x + 2 + 1/x - 2 = (5x - 6)/(x2 - 4)  and we must have x≠0, x≠2, x≠-2

 

5/x = (5x - 6)/(x2 - 4)

 

Multiply both sides by (x2 - 4)*x

5(x2 - 4) = (5x - 6)x

5x2 - 20 = 5x2 - 6x

-20 = -6x

x = 20/6

 

x = 10/3

 

$$x=3\frac{1}{3}$$

 

.

 Oct 6, 2014
 #1
avatar+33661 
+5

Is the first term  $$\frac{4}{x}+2$$  or $$\frac{4}{x+2}$$ ?

 

Is the second term  $$\frac{1}{x}-2$$  or  $$\frac{1}{x-2}$$  ?

 Oct 6, 2014
 #2
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0

the second one. :)

 Oct 6, 2014
 #3
avatar+33661 
+5
Best Answer

Then we have 4/x + 2 + 1/x - 2 = (5x - 6)/(x2 - 4)  and we must have x≠0, x≠2, x≠-2

 

5/x = (5x - 6)/(x2 - 4)

 

Multiply both sides by (x2 - 4)*x

5(x2 - 4) = (5x - 6)x

5x2 - 20 = 5x2 - 6x

-20 = -6x

x = 20/6

 

x = 10/3

 

$$x=3\frac{1}{3}$$

 

.

Alan Oct 6, 2014

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