1. 2b⁴-7b
2.m²-2m-11m+22 = m² - 13m + 22
3.4x + 6y
4.2x + 4x² - 1 - 2x = 4x² - 1
5. a³ - a²b + ab² - b³ + a²b - ab² = a³ - b³
1. 2b⁴-7b
2.m²-2m-11m+22 = m² - 13m + 22
3.4x + 6y
4.2x + 4x² - 1 - 2x = 4x² - 1
5. a³ - a²b + ab² - b³ + a²b - ab² = a³ - b³