uzupełnij równość : 8xy^2 - 4x^2 y + 12xy = 4xy (.............) ^2 - do potęgi drugiej :)
8xy^2 - 4x^2 y + 12xy = 4xy (2y-x+3)
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8xy^2 - 4x^2 y + 12xy = 4xy (2y-x+3)