5m Zen
X2 y2 4x 4y
X2 y2 4x 4y pictures 5
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X2 y2 4x
X2 y2 4x 4y
x2 y2 2xy 4x 4y
factorise x2 4x 4y y2
x2 y2 4x 4y 7 0
x2 y2 4x 4y 17 0
x2 y2 4x 4y 0
x2 y2 4x 4y 1 0
x2 y2 4x 4y 4 0
x2 y2 4x 4y 8 0
x2 y2 4x 4y 28 0
x2 y2 4x 4y
