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b) 3x² - 2x - 22
c) 2x² + 4x - 3y² + 4x - 14
d) 3c + 6d
2. a) 6x² - x + 16
b) -10x² + 14x - 22
c) -75x + 52
d) -2xy + 3x - 3y - 6