5m Zen
2x2 2y2 5x
2x2 2y2 5x pictures 5
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2x2 2y2
2x2 2y2 5x
2x2 3xy 2y2 5x 5y 3
2x2+5xy+2y2+5x+y-3
2x2 2y2 5x 7y 3
