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= 5X - 4X - 3 + 5
= 1X + 2
2 ) 4m² - 2m² - 2 - m + 5 =....
= 4m² - 2m² -2 + 5 -m
= 16m - 4m - 2 + 5 - m
= 12 + 3 - m