5m Zen
2x x x3
2x x x3 pictures 5
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2x x
2x x x3
x3 2x 4 x 2
x3 2x 1 )( x 2
f x )u003d x3 2x
x3 2x 1 x 1
x 1x 2x x3 x1 21x
2x x3 7x2 40 x 2
x3 2x x 2
factorise x3 2x x 2
2x x x3
2x x x3 x y
