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2 x square 2 x 1 0
2 x square 2 x 1 0 pictures 5
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2 x
2 x square 2 x 1 0
2 x square k 2 x 1 0
root 3 x square 2 x 1 2 0
2 x square 2 root 2 x 1 0
2 x square 2 x 1 0
