The equation becomes: x-2x 2- 1+2x+2x 2+2x = 0.
Simplified as: 5x= 1 ... The solution is x= 1/5. ..
2. Similar to the above formula. Denominator reduction
The equation becomes: 5x 2-5x-x 2-3x = 0.
Simplified to: 4x 2-8x = 0. The solution is x=0.x=2.
X=0 is the increasing root. Give it up. So the positive solution is x=2.
3. Multiply both sides of the equation by x 2-4.
The equation becomes: x 2-2x+x 2+4x+4 = 8.
Simplified as: 2x 2+2x = 4. The solution is: x= 1.x=-2.
X=-2 is to increase roots and abandon roots, so the positive solution is x= 1.
4. It is also a kind of reduction. The equation becomes: 2-x+2x-6= 1.
The solution is x=5.
Are you satisfied? Hope to adopt ..