X 2 2 2x 1 2 0
- X 2 3 2x 1 2 0
- X 2 y 2 2x 1 0
- (( x 2 )( x 2 2x 1 4 3x x 2 = 0
- 2 2x 1 5 2 x )+ 2 0
- X 2 2x 1 2 3x 2 6x 13 0
- 3x 2 )( x 1 2 2x 2 3 0
- 2x 2 x 4 2 2x 1 2 0
- X 2 1 )+ 3x x 2 1 )+ 2x 2 0
- X 2 2 √ 2x 1 0
- 2 2x 1 5 2 x 2 32 0
- X 2 2x 2 x 1 2 13 0
- X 2 y 2 2x 1 0 then x31 y35
- X 2 4y 2 2x 1 0
- X 2 2x 1 )+ 4x 2 0
- (( x 2 )( x 2 2x 1 4 3x x 2 = 0.3