October 2018 2 9 Report

matematyka z plusem 1, zadanie 20, strona 165 zredukuj wyrazy podobne i oblicz wartości podanych sum algebraicznych dla x = 1/3 i y = 9. a) 2x² - xy² - 5x² + 2xy² b) -1/2x³y - 2/3xy + 1/2x³y - 1/3xy


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