5m Zen
X 1 2y x 1
X 1 2y x 1 pictures 5
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X 1
X 1 2y x 1
4 x 2y 1 x 2y 1
3x x 1 )- 2y 1 x
x 2y xy u0026#39;- y 1 x 1
x 1 dy dx 2y u003d( x 1 4
x 2y 3xy u0026#39;+ y 1 /( 1 x 2
dy dx x 2y 1 x 2y 1
dy dx 2y x 1 u003d( x 1 3
factorise x 1 )( x 1 )- 2y x 1
x 1 2y x 1 y
(- x 1 2y )(- x 1 2y
