Mathematics, 30.06.2019 11:00, Mickey2018

Find and correct the error of the following factor. factor by grouping: 3x² + xy2 – 3xy-y? line 1: = (3x² + xy2)+(-3xy – y? ) line 2: = x(3x + y2) - y(3x – y2) line 3: = (x-y) (3x +y? )

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