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X 4x2 1
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X 4x2 1
x 1 )( 4x2 7x 6
x3 4x2 x 1
x u003d- 1 5x 4x2 3
x4 x3 4x2 x 1 0
1 2 x 4x2
kx2 kx 1 u003d- 4x2 x
4x2 5k u003d( 5k 1 x
4x2 p 2 x 1 0
f x )u003d 4x2 1
x 4x2 1
