5m Zen
5x xy 2
5x xy 2 pictures 5
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5x xy 2
5x 2 y 15 xy 2
16x 0 5x 2 xy 1
5x 3y 2 xy 11
factorise 15(x-y)^2-5x(x-y)-x+y
2x 5x 2 xy 2
x 2 xy 5x 5y
5x y 4 xy 2
z 5x xy 2 10
5x xy )- 2 yx 2
5x xy 2
