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6 4x 1 x
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6 4x 1 x
x 6 4x 3 1 solution
1 4x 6 x y
x 1 )( 4x 2 7x 6
4x 3 5x 6 x 1 180
x 6 4x 1 3x
1 4x 12 x 6
x 6 4x 3 1
2 4x 6 x 1
9 6 4x 1 )u003d x 15
6 4x 1 x
