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Find all values of x such that
\frac{x}{x - 5} = \frac{4}{2x - 4} + 2x

 Jun 8, 2024

Best Answer 

 #1
avatar+1950 
+1

First, we want to get rid of the deniminators. We can do this by multiplying both sides by the LCM of the denominators. 

 

The LCM is (x-5)(x-2). 

 

We have

x(x2)=2(x5)+2x(x5)(x2)

 

We now get a quadratic. 

 

We get 

x22x=2x314x2+22x102x315x2+24x10=0

 

This where it gets tricky. There are no integer roots for this equation. 

We could use the Newton-Raphson equation, and we eventually get

x0.67798,x1.34697,x5.47503

 

I hope this was clear enough!

 

Thanks! :)

 Jun 8, 2024
 #1
avatar+1950 
+1
Best Answer

First, we want to get rid of the deniminators. We can do this by multiplying both sides by the LCM of the denominators. 

 

The LCM is (x-5)(x-2). 

 

We have

x(x2)=2(x5)+2x(x5)(x2)

 

We now get a quadratic. 

 

We get 

x22x=2x314x2+22x102x315x2+24x10=0

 

This where it gets tricky. There are no integer roots for this equation. 

We could use the Newton-Raphson equation, and we eventually get

x0.67798,x1.34697,x5.47503

 

I hope this was clear enough!

 

Thanks! :)

NotThatSmart Jun 8, 2024

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