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4x 2 4x 1 x 2 2x 1
4x 2 4x 1 x 2 2x 1 pictures 5
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4x 2 4x
4x 2 4x 1 x 2 2x 1
b u003d( x 1 2 2 2x 1 )( 1 x )+ 4x 2 4x 1
1 2x 3 2 x 1 4x 1 4x 2 4x 2 4x 1
4x 2 4x 1 x 2 2x 1
