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X 2 1 4 0
X 2 1 4 0 pictures 5
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X 2 1 4 0
4 x 1 3.2 x 1 2 0
x 4 2x 2 1 0
x 4 x 2 1 x 2 4x 5 0
x 4 x 3 x 2 x 1 0
x 4 x 3 x 2 x 1 0 solution
x 1 2 3x 4 0
x 4 x 2 1 0 solution
solve x 2 1 4 0
3x 7 x 2 1 4 )u003d 0
x 2 1 4 0
