Saved Bookmarks
| 1. |
If 2x-1/x=4 show that x sq +1/ x sq =5 |
|
Answer» Answer: -15 Step-by-step explanation: We have ,x- 1/x=5 Then x-1=5x 5x-x=-1 4x=-1 X=-1/4 Now we have the VALUE of x X^2-1/x^2=(-1/4)^2-1/(-1/4)^2=(1/16)-1/( 1/16) (-15/16) × 16/1= -15 |
|