Example 3.  
Solution:-
= (-4x - 4x)/(4x2 - 1)
= -8x/(4x2 - 1)
| Subjects | Maths (Part-1) by Mr. M. P. Keshari | 
| Chapter 1 | Linear Equations in Two Variables | 
| Chapter 2 | HCF and LCM | 
| Chapter 3 | Rational Expression | 
| Chapter 4 | Quadratic Equations | 
| Chapter 5 | Arithmetic Progressions | 
| Chapter 6 | Instalments | 
| Chapter 7 | Income Tax | 
| Chapter 8 | Similar Triangles |