5m Zen
1 x x2 9
1 x x2 9 pictures 5
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1 x x2 9
1 x 2 x2 x 9 2x2
x2 7x 9 x 1
1 x2 9 e u2212 x dx 0
f x )u003d 1 9 x2
x2 x 9 )( 2x 1 )u003d 0
2x x2 9 1 x 2
5x x 1 x2 9
x 1 x 9 find x2 1 x2
u221E 1 x x2 9 dx
1 x x2 9
