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1 9 x2 0
1 9 x2 0 pictures 5
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1 9 x2 0
x2+9/4 x 2-10
x2 2x 1 )- 9 0
(x2+1)2-6(x 2+1)+9u003d0
x2 2 3x 1 9 0
1 x2 6x 9 0
1 x2 10x 9 0
1 9 x2 0
