2) se voltarmos a forma original do polinômio fatorado (5x – 3).(y – 1) teremos: * 1 ponto a) 5xy – 5x – 3y + 3 b) 5xy + 5x – 3y + 3 c) 5xy – 5x + 3y + 3 d) 5xy – 5x – 3y – 3