5m Zen
9 x2 25
9 x2 25 pictures 5
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9 x2 25
x2 25 9 13
3x2 5x 9 x2 25
x2/25+y2/9u003d1 ellipse
x2 9 25 0
x2 9 y2 25
solve x2 9 25
x2 10x 25 9
x2 6x 9 25
x2 25 y2 9 1
9 x2 25
