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A x 2 )+ b x
A x 2 )+ b x pictures 5
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A x 2
A x 2 )+ b x
a b x 2 u003d( b a x 4
a bc x 2 b ca x c ab )u003d 0
a x 2 b x 3
a x 2 b x 1
a(x+2)-b(x-2)u003d4x
a x 2 b x 2
a * x 2 b * x c
