(a-4)×(a-2) (3x+1)×(5x-6) (3y-2c)×(y+6c) (b+3)×(b²+2b-2)

(a-4)×(a-2) = a² - 6a + 8 (3x+1)×(5x-6) = 15x² - 13x - 6 (3y-2c)×(y+6c) = 3y² + 16yc - 2c² (b+3)×(b²+2b-2) = b³ + 5b² - 6