Zadanie 13 strona 83 matematyka z plusem 2
-(3c-2)(c-1)-c(c-2)=
-(3c-2)(c-1)-c(c-2)= -(3c² - 3c - 2c + 2) - c² + 2c = -3c² + 3c + 2c - 2 - c² + 2c = -4c² + 7c - 2
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-(3c-2)(c-1)-c(c-2)= -(3c² - 3c - 2c + 2) - c² + 2c = -3c² + 3c + 2c - 2 - c² + 2c = -4c² + 7c - 2