January 2019 1 58 Report
1. 9m + 4mn - 12m -7m =
2. 2a² + 3ab - 7 - 5a² + 2ab - 4= 3. 4x² - 3xy + 7y - 5x² + 2xy - 4y =
4.-4p² + 3pq - 2 - 6p² + 8pq - 3 =
5. 4m - 5 -6m + 8 =
6. (3x² + 4x - 10) + (8x² - 6x + 2) =
7. (4p - 2q + 5r) - (10p + 8q - 7r) =
8.(3a - 12b + ab) - (7a + 4b - 8ab) =


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