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`X/(X-1)+X-1/4=4 1/4, X≠ 0,1` - Mathematics

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Question

`x/(x-1)+x-1/4=4 1/4, x≠ 0,1` 

Solution

`x/(x-1)+x-1/4=4 1/4, x≠ 0,1` 

⇒`x^2+(x-1)^2/(x(x-1))=17/4`  

⇒` (x^2+x^2-2x+1)/(x^3-x)=17/4` 

⇒ `(2x^2-2x+1)/(x^2-1)=17/4` 

⇒ `8x^2-8x+4=17x^2-17x`  

⇒`9x^2-9x-4=0` 

⇒`9x^2-12x+3x-4=0` 

⇒ `3x(3x-4)+1(3x-4)=0` 

⇒ `(3x-4) (3x+1)=0` 

⇒`3x-4=0  or  3x+1=0` 

⇒` x=4/3  or  x=-1/3`  

Hence,`4/3` and `1/3`  are the roots of the given equation.

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Chapter 10: Quadratic Equations - Exercises 1

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RS Aggarwal Mathematics [English] Class 10
Chapter 10 Quadratic Equations
Exercises 1 | Q 59
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