Saved Bookmarks
| 1. |
x^{2}=\frac{1}{x^{2}}+1 \text { then } x^{2}+\frac{1}{x^{2}}5+=root5root 30 |
|
Answer» x²= 1/x²+1 => x²-1/x² = 1=> (x²-1/x²)² = 1²=> x⁴+1/x⁴ -2 = 1=> x⁴+1/x⁴ = 3adding 2 on both the sides=> x⁴+1/x⁴ +2 = 3+2 = 5=> (x²+1/x²)² = 5=> (x²+1/x²) = ±√5 option 2 |
|