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2x 2 2sqrt 2 * x 1 0
2x 2 2sqrt 2 * x 1 0 pictures 5
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2x 2
2x 2 2sqrt 2 * x 1 0
ii 2x 2 2sqrt 2 * x 1 0
8 2x 2 2sqrt 2 * x 1 0
2x 2 2sqrt 2 * x 1 0
